Table 3: Odds ratios for the association between each of BMI and physical activity and incident hypertension.

Unadjusted OR (95% CI) value for trendAdjusted OR (95% CI)* -value for trend

Body mass index (kg/m2)
 Healthy1.00 (reference)<0.0011.00 (reference)<0.001
 Overweight1.95 (1.75, 2.18)1.92 (1.72, 2.15)
 Obese3.65 (3.25, 4.09)3.52 (3.12, 3.97)
Physical activity
 High1.00 (reference)<0.0011.00 (reference)<0.001
 Moderate1.13 (0.98, 1.29)1.05 (0.92, 1.21)
 Low1.43 (1.27, 1.61)1.26 (1.11, 1.43)
 Nil1.59 (1.39, 1.82)1.28 (1.11, 1.47)

Adjusted for age and education at survey 1 and time-dependent smoking, alcohol consumption, presence of cardiovascular disease, physical activity (in the BMI analysis), and BMI (in the physical activity analysis).
BMI (kg/m2) categorised as healthy: 18.5–25; overweight: 25–29; obese: ≥30.
Physical activity defined as nil/sedentary (0–39 metabolic equivalent (MET) min/wk), low (40–599 MET min/wk), moderate (600–1199 MET min/wk) and high (≥1200 MET min/wk).