TABLE 4—

Negative Binomial Regression Predicting Exercise Sessions per Week for Area Residents (n = 373): Los Angeles, Calif, December, 2003–May, 2004

	Prediction of Exercise Sessions,a IRR (95% CI)
Residential distance to park
> 1 mile	(Reference)
≥ 1 mile	1.38* (1.04, 1.84)
Age (18–84 y)	0.98** (0.97, 0.99)
Gender (male = 1)	1.28* (1.01, 1.62)
Race/ethnicity
Latino	(Reference)
African American	1.12 (0.84, 1.50)
Other/Asian/White	1.25 (0.80, 1.94)
Indicator of safety (safe = 1)	0.93 (0.67, 1.28)
Parkb
3	0.91 (0.60, 1.39)
4	0.85 (0.55, 1.33)
5	1.25 (0.94, 1.66)
6	(Reference)
7	1.20 (0.71, 2.00)
8	0.95 (0.66, 1.38)

Note: IRR = incidence rate ratio; CI = confidence interval.

^aIncreases in area residents’ exercise sessions per week.

^bSurvey respondents of Parks 1 and 2 were not asked about the number of exercise sessions per week, so they were not included in the sample.

* P < .001; ** P < .05.