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Screening and cervical cancer cure: population based cohort study
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2012 (Engelska)Ingår i: BMJ. British Medical Journal, E-ISSN 1756-1833, Vol. 344, s. e900-Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Objective To determine whether detection of invasive cervical cancer by screening results in better prognosis or merely increases the lead time until death.

Design Nationwide population based cohort study. Setting Sweden.

Participants All 1230 women with cervical cancer diagnosed during 1999-2001 in Sweden prospectively followed up for an average of 8.5 years. Main outcome measures Cure proportions and five year relative survival ratios, stratified by screening history, mode of detection, age, histopathological type, and FIGO (International Federation of Gynecology and Obstetrics) stage.

Results In the screening ages, the cure proportion for women with screen detected invasive cancer was 92% (95% confidence interval 75% to 98%) and for symptomatic women was 66% (62% to 70%), a statistically significant difference in cure of 26% (16% to 36%). Among symptomatic women, the cure proportion was significantly higher for those who had been screened according to recommendations (interval cancers) than among those overdue for screening: difference in cure 14% (95% confidence interval 6% to 23%). Cure proportions were similar for all histopathological types except small cell carcinomas and were closely related to FIGO stage. A significantly higher cure proportion for screen detected cancers remained after adjustment for stage at diagnosis (difference 15%, 7% to 22%).

Conclusions Screening is associated with improved cure of cervical cancer. Confounding cannot be ruled out, but the effect was not attributable to lead time bias and was larger than what is reflected by down-staging. Evaluations of screening programmes should consider the assessment of cure proportions.

Ort, förlag, år, upplaga, sidor
2012. Vol. 344, s. e900-
Nationell ämneskategori
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URN: urn:nbn:se:umu:diva-53865DOI: 10.1136/bmj.e900ISI: 000301231900004OAI: oai:DiVA.org:umu-53865DiVA, id: diva2:514836
Tillgänglig från: 2012-04-11 Skapad: 2012-04-04 Senast uppdaterad: 2018-06-08Bibliografiskt granskad

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