TABLE 2.

—Logistic Regression Models of Chlamydia Testing: Sexually Active^a Girls Aged 14–18 Years Enrolled in Medicaid Managed Care (n = 157)

Predictor	Percentage Tested	Unadjusted OR	P	Adjusted ORb	P	95% CI
Plan of enrollment			< .008*		< .04
IPA	14.9	1.00		1.00
Clinic alliance	22.2	1.63		1.60		0.53, 4.79
Staff-model HMO	41.1	3.98		3.51		1.24, 9.85
Race/ethnicity			> .05		> .28
White	32.8	1.00		1.00
African American	37.5	1.23		1.26		0.48, 3.25
Asian American	15.4	0.37		1.15		0.28, 4.63
Other or unknown	15.8	0.38		0.43		0.14, 1.27
Primary language			< .001*		< .002*
English	32.8	1.00		1.00
Non-English/unknown	3.1	0.07		0.08		0.008, 0.65
Age at first 1998 visitc	. . .	1.07	> .65	1.25	> .19	0.88, 1.77

Note. OR = odds ratio; CI = confidence interval; IPA = independent practice association; HMO = health maintenance organization.

^aClassification of sexually active girls was based on a chart note indicating sexual activity or on visit content in chart or encounter data that indicated receipt of testing, diagnosis, or services related to sexual and reproductive health.

^bOdds ratios for each predictor, adjusted for the remaining 3 predictors in the model.

^cAge was modeled as a linear predictor; departure from linear trend was nonsignificant.

*Statistically significant at α = .05 after Bonferroni correction for 4 tests.