Effectiveness of cervical screening after age 60 according to screening history: nationwide cohort study

SND-ID: SND 1028

Description Data and documentation

Creator/Principal investigator(s)

Description

The relatively high incidence of cervical cancer in women at older ages is an issue in countries performing cervical screening for decades. Controversy remains on when and how to cease screening. Existing population-based studies on effectiveness of cervical screening at older ages have not considered women’s screening history. We performed a nationwide cohort study to investigate the incidence of cervical cancer after age 60 and its association with cervical screening at ages 61-65, stratified by screening history at ages 51-60.
Using the Total Population Register, we identified women born between January 1919 and December 1945, resident in Sweden since age 51. According to the year that each county started the electronic record of cervical screening and women’s resident county, we further identified 569,132 women that have cervical screening record available since age 51. Women’s screening records, cervical cancer occurrence, and level of education were retrieved from the Swedish National Cervical Screening Registry, the National Cancer Register, and LISA (Longitudinal integration database f

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Language

English

Research principal, contributors, and funding

Research principal

Karolinska Institutet

Funding 1

  • Funding agency: Swedish Research Council

Funding 2

  • Funding agency: Swedish Foundation for Strategic Research, SSF
  • Funding agency’s reference number: KF10-0046

Funding 3

  • Funding agency: The Swedish Cancer Society
Protection and ethical review

Ethics Review

Stockholm - Ref. 2011/921-32

Method

Unit of analysis

Population

Women resident in Sweden since age 51 whose cervical screening records are available since age 51

Time Method

Sampling procedure

Total universe/Complete enumeration

Time period(s) investigated

1970-01-01–2011-12-31

Geographic coverage

Geographic spread

Geographic location: Sweden

Publications

Effectiveness of cervical screening after age 60 according to screening history: nationwide cohort study, 2017

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Dataset
Effectiveness of cervical screening after age 60 according to screening history: nationwide cohort study

Associated documentation

Description

This data comprises women born between January 1919 and December 1945, resident in Sweden since age 51, and having cervical screening record available since age 51.
It contains the following variables:
- Seq_nr: sequence number indicating each individual woman, from 1 to 569,132.
- Edu_cat: level of education in three categories: 1=low (less than high school); 2=high school; 3=university exam and above; .=missing. Data are retrieved from LISA (Longitudinal integration database for health insura

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Version 1.0

Citation

Pär Sparén. Karolinska Institutet, Department of Medical Epidemiology and Biostatistics (2017). <em>Effectiveness of cervical screening after age 60 according to screening history: nationwide cohort study</em>. Swedish National Data Service. Version 1.0. <a href="https://doi.org/10.5878/002910">https://doi.org/10.5878/002910</a>

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Data format / data structure

Numeric

Creator/Principal investigator(s)

Time period(s) investigated

1970-01-01–2011-12-31

Data collection

  • Time period(s) for data collection: 1991–2013
  • Source of the data: Registers/Records/Accounts: Administrative, Registers/Records/Accounts: Medical/Clinical

Variables

12

Number of individuals/objects

569132

Published: 2017-08-28
Last updated: 2017-10-18