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Current status of ovarian cancer in the Spanish Province of Castellon. Prognostic factors in observed and relative survival. A population cancer-registry-based study between 2004 and 2008
Estado actual del cáncer de ovario en la provincia de Castellón. Factores pronósticos en la supervivencia observada y relativa. Un estudio basado en registros poblacionales de cáncer de entre 2004 y 2008
Jose Antonio Llueca Abellaa,
Corresponding author
antonillueca@gmail.com

Corresponding author.
, David Martinez-Ramosb, Javier Escrig-Sosb, Ana Torrella-Ramosc, Jose Luis Herraiz Rodaa, Ana Serra Ruberta, Raquel Queralt-Martínb, Jose Luis Salvador-Sanchisb, Enrique Calpe Gomeza
a Department of Obstetrics and Gynecology, General University Hospital of Castellon, Spain
b Department of General and Digestive Surgery, General University Hospital of Castellon, Spain
c Castellón Cancer Registry, Conselleria de Sanitat, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Ovarian cancer accounts for 5&#37; of all cancers among women and causes more deaths than any other female genital tract cancer&#46; In Spain &#40;Europe&#41; approximately 8&#47;100&#44;000 habitants will develop ovarian cancer&#46; Ovarian cancer is often diagnosed at an advanced stage&#44; and about 70&#8211;80&#37; of them will be found at an advanced stage&#46; For this group of patients 5-year-survival is lower than 20&#37;&#46;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">Several prognostic factors for ovarian cancer have been studied and reported in an attempt to increase tumor-free survival&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#44;3</span></a> The most important and constant prognostic factors reported have been International Federation of Gynecology and Obstetrics &#40;FIGO&#41; stage&#44; size of residual tumor after primary surgery and age at diagnosis&#46; Other variables&#44; such as time period&#44; histological type and grade&#44; performance status&#44; preoperative CA 125 levels or other molecular markers seem not to be so predictive&#46;<a class="elsevierStyleCrossRefs" href="#bib0020"><span class="elsevierStyleSup">4&#8211;6</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">The main objective of this population registry cancer-based study was to evaluate prognostic factors for ovarian cancer survival in the European Province of Castellon &#40;Spain&#41; during the period 2004&#8211;2008&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Methods</span><p id="par0020" class="elsevierStylePara elsevierViewall">The Province of Castellon is located in the Comunitat Valenciana at the Mediterranean coast in the East of Spain &#40;Europe&#41;&#46; The population of Castellon officially reached 604&#44;333 people in 2011&#44; as recorded by the National Statistics Institute of Spain&#46; Although most patients with ovarian cancer are treated in the Castellon University General Hospital &#8211; where this study was conducted &#8211; there are also 3 public hospitals and 1 private hospital in this province&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">According to the Castellon Cancer Registry&#44; follow-up period was since 1 January 2004 to 31 December 2012&#46; The Castellon Cancer Registry Database was used to identify eligible ovarian cancer patients&#46; This population cancer registry is included in the EUROCARE study&#46; Out of a total of 236 patients with ovarian cancer in the database diagnosed between 1 January 2004 and 31 December 2008&#44; there were 207 finally analyzed due to excessive missing data in 29 cases&#46; Patients without histological confirmation and those with borderline cancers or cancers with a low malignant potential were excluded&#46; The incidence rate was adjusted to standard world&#39;s population and it is reported as the new diagnosed cases per 100&#44;000 person-year&#46;<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">The following available variables were studied&#58; age at diagnosis&#44; FIGO stage&#44;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> histology and grade of differentiation &#40;according to the WHO classification&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">8</span></a> For this study&#44; histological types were grouped in several groups according to a condensed IARC-classification&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">9</span></a> The data analysis was approved by our Ethical and Clinical Investigation Committee&#46;</p><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Statistical analysis</span><p id="par0035" class="elsevierStylePara elsevierViewall">Quantitative variables were defined as median and range&#46; Qualitative variables were described as frequency and percentages&#46; To calculate Expected survival for a similar population without ovarian cancer Ederer&#39;s method was used adjusting women&#39;s mortality tables by age and year in the Comunitat Valenciana for the period 2004&#8211;2008&#44; obtained from the National Statistics Institute of Spain&#46; Observed survival was defined as time between diagnosis and date of death of a patient for any cause and was calculated using Kaplan&#8211;Meier actuarial method&#46; The Relative survival is the ratio between Observed survival and Expected survival&#46; A Cox proportional hazard model<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">10</span></a> was used for multivariate analysis of Observed survival&#46; Univariate analysis of Observed survival was performed using also this method but including only one variable&#46; According to Dickman&#44;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">11</span></a> a generalized linear model with a Poisson error structure was used for multivariate analysis of Relative survival&#46; This model has been previously used by others&#46;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">12</span></a> Univariate analysis of Relative survival was performed using also this method but including only one variable&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">All tests were two-tailed and the level of <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#46;05 was considered statistically significant&#46; STATA for Windows&#44; version 12 &#40;StataCorp&#44; College Station&#44; TX&#41; was used to perform the statistical analyses&#46;</p></span></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Results</span><p id="par0045" class="elsevierStylePara elsevierViewall">Two hundred and seven patients were included in the study &#40;Codes C56&#44; C57&#46;0-4 from International Classification of Disease&#44; ICE-10&#41;&#46; The median age at diagnosis was 65 years &#40;range&#58; 22&#8211;98&#41;&#46; Diagnosis was established by means of histological analysis of primary tumor in 161 cases &#40;77&#46;8&#37;&#41;&#44; histological analysis of metastases in 7 cases &#40;3&#46;4&#37;&#41;&#44; diagnostic imaging in 20 cases &#40;9&#46;6&#37;&#41;&#44; cytology in 11 cases &#40;5&#46;3&#37;&#41; and death certificate in 8 patients &#40;3&#46;9&#37;&#41;&#46; A total of 186 cases &#40;89&#46;9&#37;&#41; presented as a primary tumor without metastasis&#44; in 8 cases &#40;3&#46;9&#37;&#41; it was a secondary tumor&#46; Median of the total number of tumors was 1 &#40;range 1&#8211;3&#41;&#46;</p><p id="par0050" class="elsevierStylePara elsevierViewall">Median follow-up time was 40&#46;8 months &#40;range 12&#8211;108 months&#41;&#46; A total of 151 patients died during the follow-up &#40;73&#37;&#41;&#46; The median overall Observed survival was 49&#37; &#40;range&#58; 21&#8211;96&#37;&#41;&#44; whereas Relative survival was 56&#37; &#40;range&#58; 26&#8211;96&#37;&#41;&#46; The incidence of cases by year is detailed in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#46; Cumulative probability of Observed and Relative survival at 1&#44; 3 and 5 years of follow-up is shown in <a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#46; Standardized incidence rate by age and year is shown in <a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>A&#46; Observed and Relative survival curves &#40;including 95&#37; confidence interval&#41; are shown in <a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>B and C&#44; respectively&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="tbl0010"></elsevierMultimedia><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0055" class="elsevierStylePara elsevierViewall"><a class="elsevierStyleCrossRefs" href="#fig0010">Figs&#46; 2 and 3</a> show Observed and Relative survival curves according to available variables&#46; As seen in these figures&#44; the groups with a worse prognosis were age over 70 years&#44; histological grade III&#44; serous tumors and stage IV&#46; On univariate analysis for Observed survival &#40;<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#41;&#44; age over 70 years showed statistically significant differences compared with patients under 50 years&#46; Statistically significant differences were also seen for patients in stage III and IV comparing with stage I&#46; On multivariate analysis for Observed survival&#44; age at diagnosis and stage showed both statistically significant differences&#46; On multivariate analysis for Relative survival&#44; the excess of mortality was approximately five times higher among stage III and twelve times higher among patients with stage IV comparing with stage I&#46;</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia><elsevierMultimedia ident="fig0015"></elsevierMultimedia><elsevierMultimedia ident="tbl0015"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Discussion</span><p id="par0060" class="elsevierStylePara elsevierViewall">This study has included all the cases of invasive ovarian cancer diagnosed in the Spanish Province of Castellon during 2004&#8211;2008&#46; The incidence rate of ovarian cancer in our province can be considered as intermedium-low when it is compared with other population cancer registries&#44; in our country or internationally&#46;<a class="elsevierStyleCrossRefs" href="#bib0070"><span class="elsevierStyleSup">13&#44;14</span></a></p><p id="par0065" class="elsevierStylePara elsevierViewall">Survival analysis showed that both Observed and Relative survival progressively decreases at 3 and 5 years of follow-up&#46; Observed survival was 51&#37; and 33&#37;&#44; whereas relative survival was 58&#37; and 40&#37;&#44; respectively&#46; These data indicate similar survival than the rest of Spain &#40;relative 5-year survival 39&#37;&#41;&#44; similar to data reported in EUROCARE from other countries in Europe &#40;relative 5-year survival 41&#37;&#41; and a little below the United States of America&#46;<a class="elsevierStyleCrossRefs" href="#bib0080"><span class="elsevierStyleSup">15&#44;16</span></a></p><p id="par0070" class="elsevierStylePara elsevierViewall">Age at diagnosis has been repeatedly reported as an independent risk factor for ovarian cancer&#46;<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;17&#8211;22</span></a> In fact&#44; patients over 70 years in our study showed almost two times greater chance of death than patients under 50 years&#46; It is probable&#44; that comorbidities &#40;heart problems&#44; hypertension&#44; diabetes&#44; etc&#46;&#41; in this group of older patients affect the prognosis for two main reasons&#46; On the one hand&#44; it is possible that an aggressive treatment cannot be withstood by weak patients&#44; affecting directly their survival&#46; On the other hand&#44; it is possible that treatments applied in these patients were given in a less aggressive or uncompleted way&#44; what could also affect their potential benefit&#46; Nevertheless&#44; in our study&#44; Relative survival&#44; having into account the Spanish characteristics&#44; demonstrated that age at diagnosis is not an independent risk factor&#46; In consequence&#44; it could be assumed that tumor aggressiveness is similar in any age of diagnosis&#46;</p><p id="par0075" class="elsevierStylePara elsevierViewall">When the grade of differentiation of the tumor was analyzed&#44; not statistically significant differences were found&#46; These results are in agreement with those of other authors and could be explained by a known inter-observer variability when establishing the degree of differentiation of a tumour&#46;<a class="elsevierStyleCrossRefs" href="#bib0120"><span class="elsevierStyleSup">23&#44;24</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">Serous tumors have been reported to have a worse prognosis that other epithelial tumours&#46;<a class="elsevierStyleCrossRefs" href="#bib0070"><span class="elsevierStyleSup">13&#44;25</span></a> However&#44; our study did not reach statically significance in analysis for histological type&#46; Only for Observed survival in univariate analysis some differences were found&#46; It is possible&#44; that the relatively low number of cases could explain these paradoxical results&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">As it is well known&#44; ovarian cancer is diagnosed frequently at an advanced stage&#46; In fact&#44; near 60&#37; of the patients in our population were diagnosed in FIGO stage III and IV&#44; whereas only a minority of these tumors &#40;18&#37;&#41; was diagnosed in an early stage&#46; For early ovarian cancer&#44; Observed survival was similar to those reported for other authors&#46; Nevertheless&#44; for advanced stages&#44; the survival of our population was worse than in other western countries&#46; For FIGO stage IV&#44; 5-year survival was 0&#46;05&#37;&#44; that is&#44; close to zero&#46; As a consequence&#44; FIGO stage was confirmed in our study as the main important independent risk factor for survival&#44; both in univariate and multivariate analyses&#46; This results are also in concordance with those reported by other authors&#46;<a class="elsevierStyleCrossRefs" href="#bib0135"><span class="elsevierStyleSup">26&#44;27</span></a> Early diagnosis is one of the main objectives of population cancer care&#46; Moreover&#44; it is possible that a significant increase on population survival reflects an earlier diagnosis&#46; There is not an effective population screening program in ovarian cancer&#44; but it is known that many patients may benefit from ultrasound diagnosis and tumor markers levels&#44; such as CA 125&#44; in order to anticipate diagnosis&#46; Consequently&#44; this early diagnosis could improve survival for a very important group of patients&#46;<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">28</span></a> Although our population-based study reflects that only 18&#37; of patients are diagnosed in an early stage&#44; we believe that this percentage will be increased in the following years for two main reasons&#46; First&#44; access to the health system is becoming increasingly frequent&#44; and second new technologies such as image tests and laparoscopic approaches to abdominal cavity may diagnose cancers in earlier stages&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">Another important prognostic factor in ovarian cancer is residual tumor after cytoreductive surgery&#46; In fact&#44; among patients undergoing operative intervention for ovarian cancer&#44; the proportion of patients undergoing complete cytoreductive surgery is independently associated with overall survival time&#46;<a class="elsevierStyleCrossRef" href="#bib0150"><span class="elsevierStyleSup">29</span></a> Unfortunately&#44; our study was not able to determine this relationship&#44; since this variable was not available from our population registry&#46;</p><p id="par0095" class="elsevierStylePara elsevierViewall">It is important to emphasize that only population-based studies can demonstrate independent prognostic factors that can affect the entire population&#46; Therefore&#44; this is the only reliable way to analyze which is the impact of these risk factors on survival&#46; One of the main strengths of our study is that this population-registry cancer study includes data from several institutions in our province&#44; and not from a single institution&#46; As a consequence&#44; it reflects our reality better than studies conducted in very specialized institutions&#46; Moreover&#44; in contrast to clinical studies&#44; in which patients are selected&#44; population-based studies are based upon a heterogeneous group of patients and can be used to determine prognostic factors with low risk of selection bias&#46; As a consequence&#44; it is highly likely that our findings reflect what really happened in Spain during the period study 2004&#8211;2008&#46;</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Conclusion</span><p id="par0100" class="elsevierStylePara elsevierViewall">Patients with ovarian cancer present a poor survival&#46; In our population registry-based study&#44; only age at diagnosis and FIGO stage were independent prognostic factors for observed survival&#44; whereas only FIGO stage can be considered a prognostic factor for relative survival&#46;</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Conflict of interest statement</span><p id="par0105" class="elsevierStylePara elsevierViewall">The authors declare that there are no conflicts of interest&#46;</p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Ethical responsibilities</span><p id="par0110" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleBold">Protection of human and animal subjects&#46;</span> The authors declare that no experiments were performed on humans or animals for this study&#46;</p><p id="par0115" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleBold">Confidentiality of data&#46;</span> The authors declare that no patient data appear in this article&#46;</p><p id="par0120" class="elsevierStylePara elsevierViewall"><span class="elsevierStyleBold">Right to privacy and informed consent&#46;</span> The authors declare that no patient data appear in this article&#46;</p></span></span>"
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            4 => "Conclusiones"
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          "titulo" => "Discussion"
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          "titulo" => "Conclusion"
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          "identificador" => "sec0035"
          "titulo" => "Conflict of interest statement"
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          "identificador" => "sec0060"
          "titulo" => "Ethical responsibilities"
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          "titulo" => "References"
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    "fechaRecibido" => "2014-04-13"
    "fechaAceptado" => "2014-05-23"
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        0 => array:4 [
          "clase" => "keyword"
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          "identificador" => "xpalclavsec356659"
          "palabras" => array:4 [
            0 => "Ovarian cancer"
            1 => "Survival"
            2 => "Prognosis"
            3 => "Cancer registry"
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        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec356658"
          "palabras" => array:4 [
            0 => "c&#225;ncer de ovario"
            1 => "Supervivencia"
            2 => "Pron&#243;stico"
            3 => "Registro de c&#225;ncer"
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      "en" => array:2 [
        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle" id="sect0010">Background</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The aim of this population-based study was to assess independent prognostic factors in ovarian cancer by analyzing observed and relative survival in a representative Spanish population&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">We carried out a retrospective&#44; observational&#44; population-registry-based study&#46; Data on 207 patients with ovarian cancer were provided by the Castellon Cancer Registry&#46; Observed and relative survival were described at 1&#44; 3 and 5 years&#46; The effect of prognostic factors on survival was assessed with univariate and multivariate analyses&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">The median follow-up was 40&#46;8 months &#40;range&#58; 12&#8211;108 months&#41;&#46; Observed and relative survival rates at 1&#44; 3 and 5 years were 79&#37;&#44; 51&#37;&#44; 33&#37;&#44; and 84&#37;&#44; 58&#37;&#44; 40&#37;&#44; respectively&#46; Age older than 70 years showed worse observed survival in the univariate and multivariate analyses&#46; Only FIGO stage was an independent prognostic factor for observed and relative survival&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0025">Conclusions</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Survival is poor in patients with ovarian cancer&#46; In our population-registry-based study&#44; only age at diagnosis and FIGO stage were independent prognostic factors for observed survival&#44; whereas only FIGO stage could be considered a prognostic factor for relative survival&#46;</p>"
      ]
      "es" => array:2 [
        "titulo" => "Resumen"
        "resumen" => "<span class="elsevierStyleSectionTitle" id="sect0035">Antecedentes</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">El objetivo de este estudio poblacional fue evaluar los factores pron&#243;sticos independientes de c&#225;ncer de ovario mediante el an&#225;lisis de la supervivencia observada y relativa en una poblaci&#243;n espa&#241;ola representativa&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Se realiz&#243; un estudio retrospectivo&#44; observacional&#44; y basado en un registro de poblaci&#243;n&#46; Los datos de 207 pacientes con c&#225;ncer de ovario proceden del Registro de C&#225;ncer de Castell&#243;n&#46; Se describi&#243; la supervivencia observada y relativa a 1&#44; 3 y 5 a&#241;os&#46; El efecto de los factores pron&#243;sticos en la supervivencia se evalu&#243; mediante an&#225;lisis univariantes y multivariantes&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">La mediana de seguimiento fue de 40&#44;8 meses &#40;intervalo&#58; 12-108 meses&#41;&#46; Las tasas de supervivencia observada y relativa a 1&#44; 3 y 5 a&#241;os fueron de 79&#37;&#44; 51&#37; y 33&#37; y de 84&#37;&#44; 58&#37; y 40&#37;&#44; respectivamente&#46; La edad superior a los 70 a&#241;os mostr&#243; la peor supervivencia observada en los an&#225;lisis univariantes y multivariantes&#46; S&#243;lo el estadio en la clasificaci&#243;n FIGO fue un factor pron&#243;stico independiente de la supervivencia observada y relativa&#46;</p> <span class="elsevierStyleSectionTitle" id="sect0050">Conclusiones</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">La supervivencia en los pacientes con c&#225;ncer de ovario es limitada&#46; En nuestro estudio basado en un registro de poblaci&#243;n&#44; s&#243;lo la edad en el momento del diagn&#243;stico y el estadio de FIGO fueron factores pron&#243;sticos independientes para la supervivencia observada&#44; mientras que s&#243;lo el estadio de la FIGO se podr&#237;a considerar un factor pron&#243;stico en la supervivencia relativa&#46;</p>"
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          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Standardized incidence rates by age and years &#40;A&#41;&#46; General cumulated probability of survival&#44; Relative &#40;B&#41; and Observed &#40;C&#41;&#46;</p>"
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          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Cumulated probability of Relative survival and Observed survival by age groups &#40;A and B&#41;&#44; and FIGO stages &#40;C and D&#41;&#46;</p>"
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          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">Frequencies &#40;rounded &#37;&#41;&#46;</p>"
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                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">Year of incidence&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">2004&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">2005&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">2006&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">2007&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" style="border-bottom: 2px solid black">2008&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
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                  \t\t\t\t" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">Total</span>&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " colspan="7" align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleItalic">Grade</span></td></tr><tr title="table-row"><td class="td" title="\n
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                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>I&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
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                  \t\t\t\t  " align="char" valign="\n
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                  \t\t\t\t">2 &#40;22&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
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                  \t\t\t\t">4 &#40;45&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " align="char" valign="\n
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                  \t\t\t\t">0&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">2 &#40;22&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">1 &#40;11&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
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                  \t\t\t\t"><span class="elsevierStyleItalic">9 &#40;4&#41;</span>&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>II&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4 &#40;30&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
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                  \t\t\t\t">2 &#40;14&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
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                  \t\t\t\t\ttop\n
                  \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Non specified&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t\ttop\n
                  \t\t\t\t">0&#46;72&#47;0&#46;90&nbsp;\t\t\t\t\t\t\n
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                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab574075.png"
              ]
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        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Cumulated probability of survival&#58; Observed and Relative survival by years of follow-up&#46;</p>"
        ]
      ]
      5 => array:7 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "tabla" => array:1 [
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
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                  \t\t\t\t\tvoid\n
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                  \t\t\t\t">&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t  " colspan="6" align="center" valign="\n
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                  \t\t\t\t" style="border-bottom: 2px solid black">Observed survival</td><td class="td" title="\n
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Article information
ISSN: 03045013
Original language: English
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2015 April 0 1 1
2015 February 0 1 1
2015 January 2 0 2
2014 December 2 0 2
2014 November 3 9 12
2014 October 1 2 3
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es en pt

¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?

Você é um profissional de saúde habilitado a prescrever ou dispensar medicamentos