Validity of age at menarche self-reported in adulthood

Cooper, Rachel; Blell, Mwenza; Hardy, Rebecca; Black, Stephanie; Pollard, Tessa M.; Wadsworth, Michael; Pearce, Mark S.; Kuh, Diana

doi:10.1136/jech.2005.043182

Cited by 174 publications

(147 citation statements)

References 22 publications

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“…41) but less valid for longer periods (42). The validity of age of menarche reported by middle-aged women has been questioned in a study; however, validity was improved when age at menarche was categorized into three groups (43). A nondifferential misclassification of exposure will lead to a dilution of the risk estimates.…”

Section: Discussionmentioning

confidence: 99%

Reproductive Factors and Risk of Meningioma and Glioma

Wigertz¹,

Lönn

Hall

et al. 2008

Cancer Epidemiology, Biomarkers &Amp; Prevention

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Female sex hormones have previously been suggested as possible risk factors for brain tumors, but published studies have reported conflicting results. We conducted a population-based case-control study of glioma (n = 626) and meningioma (n = 906) cases and randomly selected controls stratified on age and geographic region (n = 1,774) in Denmark, Finland, Norway, Sweden, and the United Kingdom. Unconditional logistic regression was used to estimate odds ratios (OR) for glioma and meningioma in relation to reproductive factors. A decreased glioma risk was associated with ever-pregnancy compared with neverpregnancy [OR, 0.8; 95% confidence interval (95% CI), 0.6-1.0]. Meningioma risk among women ages <50 years was increased in relation to number of pregnancies leading to a live birth (OR, 1.8; 95% CI: 1.1-2.8 for giving birth to 3 children compared with nulliparous women; P trend among parous women = 0.01). This relation was not found for older women. Breastfeeding among parous women increased the glioma risk (OR, 2.2; 95% CI, 1.3-3.9 for breast-feeding 36 months or more compared with breast-feeding 3 months or less). Menopausal status and age at menopause were not associated with meningioma or glioma risk. Our findings imply that reproductive hormones may influence the occurrence of meningioma and glioma.

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Section: Discussionmentioning

confidence: 99%

Reproductive Factors and Risk of Meningioma and Glioma

Wigertz¹,

Lönn

Hall

et al. 2008

Cancer Epidemiology, Biomarkers &Amp; Prevention

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“…16,23,[38][39][40][41][42][43][44][45] Even the rare prospective cohort studies of this topic have ascertained ages of menarche or sexual intercourse retrospectively, 46,47 have reported only baseline data, 35 or have used analytic methods that represent the probability of FSI at a particular age (eg, logistic regression) rather than the time to FSI (eg, hazard models), 46,48 thus losing the longitudinal or temporal aspect of the study design. Prospective longitudinal designs have several advantages, including the increased accuracy of reporting of timing because the dates are captured close to the time of the event 49,50 and the use of statistical approaches, such as survival and hazard models, that measure changes within each subject over time, in addition to the difference between groups. 51 Hazard models do not require selecting a cutoff age (eg, "early" or "normal" age at FSI).…”

mentioning

confidence: 99%

Age at Menarche and Age at First Sexual Intercourse: A Prospective Cohort Study

et al. 2013

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WHAT'S KNOWN ON THIS SUBJECT: Young age at first sexual intercourse (FSI) is related to risk-taking behaviors and negative outcomes. Previous studies using a cohort or cross-sectional design have concluded that younger age at menarche (AAM) is related to younger age at FSI. WHAT THIS STUDY ADDS:This large birth cohort study is the first to address the temporal relationship between AAM and FSI. We found that younger AAM does not confer higher risk of early FSI, whether in terms of calendar age or time since menarche. abstract OBJECTIVE: Younger age at menarche (AAM) may put girls at risk for earlier first sexual intercourse (FSI). Young age at FSI has far-reaching negative outcomes. We describe the longitudinal relationship between AAM and FSI in a large prospective birth cohort.METHODS: AAM was collected from 554 girls from the Western Australia (Raine) Pregnancy Cohort Study, prospectively from age 10 or retrospectively at age 14. Age at FSI was collected at ages 17 and 20. Cox regression models describe likelihood of FSI by age and years since menarche for younger (,12 years) and older ($14 years) AAM relative to average AAM (12-13 years). RESULTS: CONCLUSIONS:Younger AAM was not a risk factor for younger age at FSI in this cohort.

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“…Aos 30 anos essa correlação é moderada r = 0,75-0,78 (16,14) e aos 50 anos, embora moderada, um pouco menor r = 0,67 (17). Corroborando esses dados, Cooper e cols., comparando a idade da menarca referida aos 48 anos, em um grupo de mulheres que fizeram parte do Medical Research Council National Survey of Health and Development, com a data do evento obtida mediante acompanhamento longitudinal, constataram uma correlação moderada (r = 0,66), mas um nível de concordância baixo (k = 0,35), concluindo que esse dado deve ser utilizado com cautela (18). Assim, a idade obtida pelo método recordatório, embora suficientemente acurada para estudos epidemiológicos, não é considerada acurada para propósitos clínicos.…”

Section: Discussionunclassified

“…Além do modo como o dado foi obtido, é importante levar em conta o nível educacional da população envolvida, pois esse certamente influencia no resultado. Segundo Cooper e cols., dados resgatados em estudos longitudinais provavelmente privilegiam a informação de pessoas com melhor escolaridade (18).…”

Section: Discussionunclassified

Importância do viés de memória na obtenção da idade da menarca pelo método recordatório em adolescentes brasileiras

Castilho

Nucci

Assuino

et al. 2014

Arq Bras Endocrinol Metab

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RESUMOObjetivo: Comparar a idade da menarca obtida pelo método recordatório conforme o tempo decorrido desde o evento para verificar a importância do viés de memória. Sujeitos e métodos: Foram avaliadas 1.671 meninas (7-18 anos) em escolas de Campinas-SP quanto à ocorrência da menarca, pelos métodos status quo (menarca: sim ou não) e recordatório, (data da menarca, para as que a referiram). A idade da ocorrência do evento obtida pelo status quo foi calculada pelo logito, que considera todo o grupo, e a obtida pelo recordatório, pela média da idade da menarca referida. Nesse grupo a idade da menarca foi obtida pela diferença entre a data do evento referida e a data de nascimento. As meninas que referiram menarca (883; 52,8%) foram divididas em quatro grupos de acordo com o tempo decorrido desde o evento. Para as análises foram utilizadas a ANOVA e a regressão logística, com significância de 0,05. Resultados: A idade da menarca, calculada pelo logito, foi de 12,14 anos (IC95% 12,[8][9][10][11][12]20). As médias das idades referidas pelo mé-todo recordatório foram: para as que menstruaram há 1 ano ou menos 12,26 anos (±1,14), entre > 1 e 2 anos 12,29 anos (±1,22), entre > 2 e 3 anos 12,23 anos (±1,27) e mais de 3 anos 11,55 anos (±1,24), p < 0,001. Conclusão: A idade da menarca obtida pelo método recordatório foi semelhante para as meninas que menstruaram há 3 anos ou menos (e se aproximou da idade calculada pelo logito); acima de 3 anos o viés de memória foi significante. Arq Bras Endocrinol Metab. 2014;58(4):394-7 Descritores Menarca; adolescente; viés ABSTRACT Objective: To compare the age at menarche obtained by recall method according to the time elapsed since the event, in order to verify the importance of the recall bias. Subjects and methods: Were evaluated 1,671 girls (7-18 years) at schools in Campinas-SP regarding the occurrence of menarche by the status quo method (menarche: yes or no) and the recall method (date of menarche, for those who mentioned it). The age at menarche obtained by the status quo method was calculated by logit, which considers the whole group, and the age obtained by the recall method was calculated as the average of the mentioned age at menarche. In this group, the age at menarche was obtained by the difference between the date of the event and the date of birth. Girls who reported menarche (883, 52.8%) were divided into four groups according to the time elapsed since the event. To analyze the results, we used ANOVA and logistic regression for the analysis, with a significance level of 0.05. Results: The age at menarche calculated by logit was 12.14 y/o (95% CI 12.08 to 12.20). Mean ages obtained by recall were: for those who experienced menarche within the previous year 12.26 y/o (±1.14), between > 1-2 years before, 12.29 y (±1.22); between > 2-3 years before, 12.23 y/o (±1.27); and more than 3 years before, 11.55y/o (±1.24), p < 0.001. Conclusion: The age at menarche obtained by the recall method was similar for girls who menstruated within the previous 3 years (and approaches th...

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Validity of age at menarche self-reported in adulthood

Cited by 174 publications

References 22 publications

Reproductive Factors and Risk of Meningioma and Glioma

Reproductive Factors and Risk of Meningioma and Glioma

Age at Menarche and Age at First Sexual Intercourse: A Prospective Cohort Study

Importância do viés de memória na obtenção da idade da menarca pelo método recordatório em adolescentes brasileiras

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