Table 3.

Mortality Rates^a and Hazard Ratios^b for Mortality According to the Combination of Body Mass Index and Moderate Physical Activity and the Combination of Waist Circumference and Moderate Physical Activity (n = 185,412), National Institutes of Health-AARP Diet and Health Study, 1996–2006

	Moderate Physical Activity, hours/week
	>7			4–7			1–3			<1			Inactive
	MR	HR	95% CI	MR	HR	95% CI	MR	HR	95% CI	MR	HR	95% CI	MR	HR	95% CI
Body mass indexc at age 50 years
18.5–<25	653	1.00	Referent	735	1.14	1.07, 1.21	815	1.22	1.14, 1.30	935	1.33	1.22, 1.45	1,206	1.62	1.50, 1.75
25–<30	806	1.15	1.07, 1.23	864	1.23	1.15, 1.32	928	1.31	1.22, 1.40	996	1.39	1.27, 1.52	1,303	1.71	1.58, 1.85
30–<35	1,151	1.62	1.42, 1.84	1,211	1.73	1.53, 1.95	1,187	1.76	1.57, 1.96	1,523	2.16	1.89, 2.47	1,505	2.12	1.89, 2.38
≥35	1,149	1.79	1.37, 2.33	1,601	2.45	1.98, 3.04	1,583	2.49	2.08, 2.98	1,631	2.75	2.20, 3.44	2,158	3.45	2.97, 4.00
Waist circumference categoryd
1	684	1.00	Referent	756	1.11	1.04, 1.19	853	1.20	1.12, 1.29	977	1.28	1.16, 1.42	1,303	1.61	1.48, 1.76
2	734	1.10	1.00, 1.21	759	1.15	1.05, 1.27	828	1.22	1.11, 1.35	961	1.36	1.21, 1.54	1,225	1.64	1.47, 1.83
3	782	1.15	1.00, 1.32	888	1.33	1.17, 1.51	885	1.31	1.16, 1.49	990	1.44	1.24, 1.67	1,154	1.59	1.39, 1.83
4	999	1.44	1.23, 1.68	1,097	1.55	1.34, 1.80	1,156	1.62	1.41, 1.87	1,283	1.75	1.50, 2.04	1,561	2.01	1.74, 2.32

Abbreviations: CI, confidence interval; HR, hazard ratio; MR, mortality rate.

^aAge-standardized mortality rate per 100,000 person-years, standardized to the age distribution of the cohort in men and women.

^bAdjusted for sex, age, race/ethnicity, education, smoking status, and alcohol consumption.

^cWeight (kg)/height (m)².

^dGroup 1: men <94 cm, women <80 cm; group 2: men 94–<102 cm, women 80–<88 cm; group 3: men 102–<110 cm, women 88–<96 cm; group 4: men ≥110 cm, women ≥96 cm. Results were additionally adjusted for body mass index.