Table 5.

Regression Adjusted Health Care Utilization and Expenditures Associated with Physical Activity Frequency Levels Overall and by Age Group

	Physical activity levels			P
	Low (L) % or $	Intermediate (I) % or $	High (H) % or $	H vs. L	M vs. L	H vs. M
All ages
IP admissions (%; annual rate)	15.8	13.4	11.8	<0.0001	<0.0001	<0.0001
ER (%; annual rate)	28.3	26.9	24.6	<0.0001	0.001	<0.0001
Medical expenditures ($; PMPM)	931	814	730	<0.0001	<0.0001	<0.0001
Rx expenditures ($; PMPM)	268	223	190	<0.0001	<0.0001	<0.0001
IP admissions (%; annual rate), years
65–69	14.9	11.4	9.2	<0.0001	<0.0001	<0.0001
70–79	15.5	13.0	11.8	<0.0001	<0.0001	0.001
≥80	18.0	16.7	15.3	<0.0001	0.05	0.02
ER visits (%; annual rate), years
65–69	24.5	24.3	19.6	<0.0001	0.74	<0.0001
70–79	28.5	25.5	23.5	<0.0001	<0.0001	<0.0001
≥80	33.4	32.6	33.2	0.79	0.34	0.47
Medical expenditures ($; PMPM), years
65–69	862	737	615	<0.0001	0.002	<0.0001
70–79	982	822	755	<0.0001	<0.0001	0.02
≥80	943	886	850	0.05	0.25	0.42
Rx expenditures ($; PMPM), years
65–69	344	232	170	<0.0001	<0.0001	<0.0001
70–79	272	229	215	<0.0001	0.001	0.17
≥80	195	199	176	0.15	0.77	0.08

All ages, N = 17,676; 65–69 years, N = 5529; 70–79 years, N = 7873; ≥80 years, N = 4274; AARP Medicare Part D plans, N = 9474.

ER, emergency room; IP, inpatient; PMPM, per member per month; Rx, prescription.