39 research outputs found
Cost–utility analysis of liraglutide compared with sulphonylurea or sitagliptin, all as add-on to metformin monotherapy in Type 2 diabetes mellitus
Maternal and neonatal risk factors for childhood type 1 diabetes: a matched case-control study
Peer reviewedPublisher PD
Brief psychological therapies for anxiety and depression in primary care: meta-analysis and meta-regression
Psychological therapies provided in primary care are usually briefer than in secondary care. There has been no recent comprehensive review comparing their effectiveness for common mental health problems. We aimed to compare the effectiveness of different types of brief psychological therapy administered within primary care across and between anxiety, depressive and mixed disorders
The relationship between body mass index and number of days spent in hospital in Scotland
Accuracy of on-line self-reported weights and heights by young adults
Background
e-epidemiology, a convenient and low-cost research method, is becoming increasingly popular. This study seeks to validate on-line self-reported heights and weights against objectively measured data in young adults.
Methods
Young adults self-reported heights and weights in an on-line lifestyle survey. These were validated using two methods: (i) measurements by staff at the primary-care clinic and (ii) measurements by a researcher within two weeks of distribution of the survey. Analyses were conducted to determine differences between the self-reported and measured heights and weights and to identify characteristics associated with under- or over-reporting of these.
Results
From a total of 23 010 young adults invited to the survey, 24% provided on-line data, mean age = 19.2 (SD 3.2) years, 43% male, 91% EU citizens. Both self-reported and measured data were available for 1446 individuals (547 men, 896 women and mean age 19.2 (SD2.6) years); 1278 validated using medical records, 168 by researcher measurements. Intra-class correlations between self-reported and measured parameters were weight (r = 0.99), height (r = 0.98), with acceptable levels of agreement between measured and self-reported weight, height and BMI using Bland & Altman analyses. Self-reported weight was underestimated uniformly across BMI categories, gender and ethnicity, by a mean −0.4 (SD 0.4) kg (P < 0.001). Height was accurately reported overall across BMI and gender: both self-reported and measured heights =1.72 (SD 0.01) m, P = 0.783. Discrepancies between methods caused misclassification of BMI category for 17 (1.8%) of participants.
Conclusions
Engagement of young adults with on-line research is encouraging. On-line self-reporting provides acceptably reliable anthropometric data for young adults, with under-reporting of weight by just 0.4 kg