11 research outputs found
Body silhouettes as a tool to reflect obesity in the past
<div><p>Life course data on obesity may enrich the quality of epidemiologic studies analysing health consequences of obesity. However, achieving such data may require substantial resources.</p><p>We investigated the use of body silhouettes in adults as a tool to reflect obesity in the past. We used large population-based samples to analyse to what extent self-reported body silhouettes correlated with the previously measured (9–23 years) body mass index (BMI) from both measured (European Community Respiratory Health Survey, N = 3 041) and self-reported (Respiratory Health In Northern Europe study, N = 3 410) height and weight. We calculated Spearman correlation between BMI and body silhouettes and ROC-curve analyses for identifying obesity (BMI ≥30) at ages 30 and 45 years. Spearman correlations between measured BMI age 30 (±2y) or 45 (±2y) and body silhouettes in women and men were between 0.62–0.66 and correlations for self-reported BMI were between 0.58–0.70. The area under the curve for identification of obesity at age 30 using body silhouettes <i>vs</i> previously measured BMI at age 30 (±2y) was 0.92 (95% CI 0.87, 0.97) and 0.85 (95% CI 0.75, 0.95) in women and men, respectively; for previously self-reported BMI, 0.92 (95% CI 0.88, 0.95) and 0.90 (95% CI 0.85, 0.96). Our study suggests that body silhouettes are a useful epidemiological tool, enabling retrospective differentiation of obesity and non-obesity in adult women and men.</p></div
Flowchart for the definition of the study population of mothers in RHINE III.
<p>Flowchart for the definition of the study population of mothers in RHINE III.</p
Bland-Altman plot for birth weight showing the paired difference between mothers reported birth weight and birth weight in the MBRN plotted against the average of the paired birth weights.
<p>The mean difference is plotted as a dashed line. Systematic bias is indicated by the distance between the dashed line and y = 0. Limits of agreement is calculated as mean difference ± 1.96 times the standard deviation of the paired differences, corrected for clustering within mother’s.</p
Difference between mother’s recall of birth weight and birth weight in the MBRN in 1464 children with birth weight registered both in the questionnaire and the MBRN).
<p>Difference between mother’s recall of birth weight and birth weight in the MBRN in 1464 children with birth weight registered both in the questionnaire and the MBRN).</p
The validity of mother’s recall of birth weight in terms of Pearson correlation coefficients and paired t-test with stratification on mother’s level of education, number of children reported by the mother and birth cohort.
<p>The validity of mother’s recall of birth weight in terms of Pearson correlation coefficients and paired t-test with stratification on mother’s level of education, number of children reported by the mother and birth cohort.</p
Paired difference between mothers reported birth weight and birth weight in the MBRN plotted against the number of recall years for the mother in 1464 children with valid data in both data sources.
<p>Paired difference between mothers reported birth weight and birth weight in the MBRN plotted against the number of recall years for the mother in 1464 children with valid data in both data sources.</p
Body silhouettes for a) men and b) women introduced in the ECRHS III and RHINE III study.
<p><b>a)</b> men, tick off your silhouette at ages: current, 8 years, voice break, 30 years, 45 years and 55 years. <b>b)</b> women, tick off your silhouette at ages: current, 8 years, menarche, 30 years, 45 years and menopause.</p
Body silhouettes as a tool to reflect obesity in the past - Fig 2
<p><b>Flow chart,</b> study population with participation in the RHINE III or ECRHS III study, reporting body silhouette at age 30 or 45, and with self-reported or objectively measured height and weight at age 30(±2y) or 45(±2y) in RHINE II or ECRHS I or II.</p
Correlation between objectively measured (ECRHS I or II) or self-reported (RHINE II) height and weight and body silhouettes reported in ECRHS III and RHINE III.
<p>Correlation between objectively measured (ECRHS I or II) or self-reported (RHINE II) height and weight and body silhouettes reported in ECRHS III and RHINE III.</p
Characteristics of the study population reporting body silhouettes in ECRHS III and in RHINE III.
<p>Characteristics of the study population reporting body silhouettes in ECRHS III and in RHINE III.</p