TABLE 3.

Probability of Low Physical Activity and Logistic Regression Modeling of the Risk Subgroups Identified From Recursive Partitioning: California Teachers Study, 1995–1996

Age, Years	Race/Ethnicity	Crowdinga	Work at Homeb	Desirable Amenitiesc	Terminal Node	No.	Probability of Low Physical Activity (95% CI)	OR	AORd
≥ 76					1	9491	0.66 (0.65, 0.67)	2.99	2.95
< 76	Hispanic, African American, and API				2	12 235	0.60 (0.59, 0.61)	2.29	2.16
≤ 35	White and other				3	11 494	0.40 (0.39, 0.40)	1.00	1.00
36–75	White and other	≥ 8%			4	19 344	0.54 (0.53, 0.55)	1.80	1.65
		< 8%	≥ 3.9%		5	40 277	0.45 (0.45, 0.45)	1.25	1.21
			< 3.9%	< 11.5	6	19 666	0.51 (0.51, 0.52)	1.61	1.51
				≥ 11.5	7	4860	0.46 (0.45, 0.47)	1.31	1.25

Note. AOR = adjusted odds ratio; API = Asian and Pacific Islander; CI = confidence interval; OR = odds ratio. Low physical activity is defined as moderate or strenuous physical activity of < 2.5 h/wk.

^aPercentage of housing units with 1 or more occupants per room.

^bPercentage who worked at home.

^cDesirable amenities included social capital (museums, historical sites, and similar institutions; theaters; associations; performing arts; and spectator sports) and recreation (golf courses and country clubs, skiing facilities, marinas, fitness and recreational sports centers, bowling centers, and other amusement and recreation industries).

^dAdjusted for age and body mass index (continuous).