Extreme obesity: sociodemographic, familial and behavioural correlates in The Netherlands.

Study Objective: To investigate the relationship between sociodemographic, behavioural, and family characteristics and the body mass index (BMI) (weight (kg)/height (m2)) of extremely obese people.

Design: Self reported sociodemographic, behavioural, and familial characteristics and weight and height were obtained by postal questionnaire.

Participants And Setting: Adult, obese Dutch people who, on their own initiative, contacted our hospital for information on obesity treatment were sent a questionnaire.

Relative validity of different methods to assess body composition in apparently healthy elderly women.

Body composition was assessed by means of densitometry, anthropometry and bioelectrical impedance in 28 healthy, elderly females, aged 67-78 years. Underwater weighing was used as the reference method. Mean body mass index (BMI) was 26.