Video instructions improve accuracy of self-measures of waist circumference compared with written instructions

Public Health Nutrition

Susan C Lennie¹  Dara F McEneaney¹ 

关键词: Anthropometry;    Measurement;    Video instruction;   

DOI  :  10.1017/S1368980011000450

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

ObjectiveTo determine whether video-based instructions improve the accuracy of self-measures of waist and hip circumference compared with written instructions.DesignPopulation-based, cross-sectional study. Self-measurements of waist circumference (WC) and hip circumference (HC) of fifty-seven participants randomly allocated to receive either written instruction or video instruction were compared with those of a trained technician.SettingAberdeen, Scotland, and Brussels, Belgium, between February and April 2010.SubjectsAdults aged 18–62 years with a high level of English language and no prior training in anthropometry.ResultsWC was significantly overestimated by the written method (1·75 cm bias; P = 0·007) but not the video method (0·95 cm bias; P = 0·239). HC was significantly underestimated in both written (−0·35 cm bias; P = 0·009) and video methods (−0·75 cm bias; P = 0·046). Reliability was not significantly affected by age, sex, BMI or WC. Bland–Altman plots demonstrated wide limits of agreement for WC (−6·83, 6·08 cm for written method; −10·14, 6·72 cm for video method) and HC (−12·85, 1·60 cm for written method; −10·82, 2·50 cm for video method).ConclusionsVideo technology can support more accurate self-measurements of anthropometric data in epidemiological studies. Further research is warranted using larger and more heterogeneous samples in order that results can be generalised.

【 授权许可】

Unknown