Table 1.
Changes over 10-20 years in mean body mass index and waist circumference in British youth aged 11-16 years by sex. Values are mean standard deviation scores (standard deviations) unless stated otherwise
| Variable
|
British Standards Institute survey
|
National diet and nutrition survey, 1997
|
Mean (SE) increase over time
|
|||||
|---|---|---|---|---|---|---|---|---|
| Males (n=1567)*
|
Females (n=2217)†
|
Males (n=389)
|
Females (n=387)
|
Males
|
Females
|
|||
| Body mass index | −0.05 (1.02) | −0.15 (0.99) | 0.42 (1.13) | 0.38 (1.09) | 0.47 (0.06) | 0.53 (0.06) | ||
| Waist circumference | 0.00 (0.99) | 0.00 (1.00) | 0.84 (1.02) | 1.02 (1.13) | 0.84 (0.06) | 1.02 (0.06) | ||
*
1977.
†
1987.