Table 3

 Mutually adjusted odds ratios and 95% confidence intervals for overweight and obesity for time point, social class, sex, and income group

nOverweightObesity
OR95% CIOR95% CI
LowerUpperLowerUpper
*Reference category.
†Lower: up to the 50th centile; higher: over the 50th centile.
‡Income category odds were calculated in a separate logistic regression model using data from 1997, 1998–99, 2000–01, and 2002–03 only.
Year (p<0.001) (p<0.001)
1974*559511
198441711.020.891.171.020.731.42
199439191.441.271.641.771.312.39
1996–9740181.801.592.042.621.993.46
1998–9920132.131.852.463.372.494.56
2000–0117822.542.202.933.652.684.95
2002–0333722.672.363.014.253.255.55
Social class (p = 0.133)(p = 0.080)
Non-manual*1129911
Manual135711.050.981.131.140.981.33
Sex (p = 0.310) (p = 0.047)
Boys*1269211
Girls121781.040.971.111.151.001.32
Age group (p<0.001) (p<0.001)
5–7 years*1182911
8–10 years130411.391.301.491.491.291.72
Household income†‡ (p = 0.466) (p = 0.002)
Lower*472911
Higher46980.960.871.070.740.610.89