Table 5

Relative risk (95% confidence intervals) of being in the top third of transport physical activity in adulthood according to third of physical activity in childhood, by sex and baseline age group

Transport PA in adulthood
9–12 years at baseline13–15 years at baseline
Childhood PAMalesFemalesMalesFemales
Total PA
 Bottom third1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Middle third0.8 (0.6, 1.1)0.9 (0.7, 1.1)0.8 (0.6, 1.1)0.9 (0.7, 1.2)
 Top third1.1 (0.9, 1.5)1.0 (0.8, 1.3)0.9 (0.6, 1.2)1.0 (0.7, 1.3)
ptrend0.310.920.480.96
Leisure PA
 Bottom third1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Middle third0.9 (0.6, 1.2)0.9 (0.7, 1.2)1.0 (0.7, 1.4)1.1 (0.8, 1.5)
 Top third1.0 (0.8, 1.4)1.0 (0.8, 1.3)1.0 (0.7, 1.4)1.0 (0.7, 1.4)
ptrend0.790.920.910.87
Transport PA
 Bottom third1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Middle third1.1 (0.8, 1.5)0.9 (0.6, 1.2)0.8 (0.6, 1.2)1.1 (0.8, 1.7)
 Top third0.9 (0.7, 1.2)1.0 (0.8, 1.2)0.9 (0.6, 1.2)1.3 (1.0, 1.7)
ptrend0.700.730.360.08
School sport
 Bottom third1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Middle third1.0 (0.7, 1.3)1.2 (0.9, 1.6)1.0 (0.6, 1.5)1.1 (0.8, 1.5)
 Top third1.2 (0.9, 1.6)1.1 (0.9, 1.4)1.0 (0.7, 1.4)0.9 (0.6, 1.2)
ptrend0.220.290.920.38
School PE
 Bottom third1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Middle third1.0 (0.8, 1.4)1.0 (0.8, 1.3)1.0 (0.7, 1.4)1.1 (0.8, 1.4)
 Top third1.0 (0.8, 1.4)0.9 (0.7, 1.2)1.1 (0.8, 1.5)0.8 (0.6, 1.2)
ptrend0.810.430.640.26
Non-school sport (n)
 ≤One1.0 (ref)1.0 (ref)1.0 (ref)1.0 (ref)
 Two1.3 (0.9, 1.8)0.9 (0.7, 1.2)0.9 (0.6, 1.4)0.8 (0.5, 1.2)
 ≥Three1.6 (1.1, 2.2)0.9 (0.7, 1.2)0.9 (0.7, 1.3)1.4 (1.0, 1.9)
ptrend0.0030.560.760.01
  • p<0.05 (bold indicates statistically significant association).

  • PA, physical activity; PE, physical education; RR, relative risk.