Table 4.

Subgroup analysis by BMI ≥ 25 kg/m² across categories of walking activity for CAC in 2,251 participants

	Cases/n	*Crude	Age and sex adjusted	Full model
≤ 3.75 met-hrs/wk	171/688	1	1	1
>3.75–7.5 met-hrs/wk	66/329	0.76 (0.56–1.04)	0.72 (0.49–1.04)	0.52 (0.34–0.82)
>7.5–15 met-hrs/wk	130/643	0.77 (0.59–1.00)	0.76 (0.56–1.03)	0.64 (0.45–0.92)
>15–22.5 met-hrs/wk	61/326	0.70 (0.51–0.96)	0.68 (0.46–1.01)	0.53 (0.34–0.82)
>22.5 met-hrs/wk	57/260	0.85 (0.60–1.20)	0.95 (0.63–1.45)	0.73 (0.45–1.19)
P trend		0.09	0.30	0.02

^*The crude model adjusted for familial clustering. The second model adjusted for age, sex and familial clustering. The full model adjusted for age, sex, race, smoking, alcohol use, total exercise metabolic activity (excluding walking), and familial clustering.