ArticleJournal of epidemiology and community health1995
A time to pregnancy questionnaire designed for long term recall: validity in Oxford, England.
Article in Journal of epidemiology and community health, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
36 citing papers in PubMed.
- Chlordecone exposure in women and time to pregnancy: the Timoun cohort study in Guadeloupe, French West Indies.Environmental health : a global access science source · 2025Article
- Low Iodine Intake May Decrease Women's Fecundity: A Population-Based Cross-Sectional Study.Nutrients · 2021Article
- Trends in time-to-pregnancy in the USA: 2002 to 2017.Human reproduction (Oxford, England) · 2021Article
- Impaired fecundity as a marker of health and survival: a Danish twin cohort study.Human reproduction (Oxford, England) · 2021Article
- Dioxin exposure associated with fecundability and infertility in mothers and daughters of Seveso, Italy.Human reproduction (Oxford, England) · 2021Article
- Night Shift Work and Fecundability in Late Reproductive-Aged African American Women.Journal of women's health (2002) · 2021Article
- Knowledge and Practice of Contraception Use Among Females of Child-Bearing Age in Mosul, Iraq.International journal of women's health · 2020Article
- Mining leachate contamination and subfecundity among women living near the USA-Mexico border.Environmental geochemistry and health · 2019Article
- The Gulf oil spill, miscarriage, and infertility: the GROWH study.International archives of occupational and environmental health · 2018Article
- Increased time-to-pregnancy is associated with domestic work in South Africa.Reproductive health · 2016Article
- Brief Report: Plasma Concentrations of Perfluorooctane Sulfonamide and Time-to-pregnancy Among Primiparous Women.Epidemiology (Cambridge, Mass.) · 2016Article
- Male Reproductive Disorders and Fertility Trends: Influences of Environment and Genetic Susceptibility.Physiological reviews · 2016Review
- Clustering of retrospectively reported and prospectively observed time-to-pregnancy.Annals of epidemiology · 2015Article
- Maternal Recall Error in Retrospectively Reported Time-to-Pregnancy: an Assessment and Bias Analysis.Paediatric and perinatal epidemiology · 2015Article
- Development and initial validation of a fertility experiences questionnaire.Reproductive health · 2015Article
- Fecundity in women with multiple sclerosis: an observational mono-centric study.Journal of neurology · 2015Observational
- Childhood social hardships and fertility: a prospective cohort study.Annals of epidemiology · 2013Article
- Parental infertility, infertility treatment and hepatoblastoma: a report from the Children's Oncology Group.Human reproduction (Oxford, England) · 2012Article
- Perfluorinated compounds and subfecundity in pregnant women.Epidemiology (Cambridge, Mass.) · 2012Article
- Foetal exposure to maternal passive smoking is associated with childhood asthma, allergic rhinitis, and eczema.TheScientificWorldJournal · 2012Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
STUDY
objectiveTo establish the degree of validity of data on time to pregnancy, derived retrospectively using a short questionnaire.
designInformation from the questionnaire was compared with data that had been collected concurrently from the same individuals. SETTING AND
participantsQuestionnaires were mailed to 1647 women who continue to be followed up by the Oxford Family Planning Association contraceptive study, and a further 424 were approached for personal interview. Response rates were 91% and 79% respectively. MAIN
resultsMatching was successful in 91% of pregnancies. Median recall time was 14 years (interquartile range, 11-16 years). At the group level, remarkably good agreement was found between the two sources of information, presented as cumulative percentage distributions of live births. The findings were at least as good with longer recall (> 14 years) as with shorter recall. Digit performance was present to a limited degree. At the individual level, some misclassification was evident, which has implications for statistical power. For detection of clinical infertility (no conception within 12 months), the sensitivity was in the range 67%-91%, and the specificity was 92%-96%. Variations with format, duration of recall, age at delivery, year of birth, parity, social class, smoking habit, last contraceptive method, and outcome (live birth or not) were generally small, and were not statistically significant.
conclusionsTime to pregnancy is a sensitive way of assessing reproductive function in either sex. Valid data at a group level can be derived retrospectively, with a long duration of recall, using a short questionnaire.
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Registered trials
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