TABLE 2.

Associations between Sexually Transmitted Disease Diagnosis and Both Sexual Partner Characteristics and Individual Sexual Activities

	Diagnosis of Sexually Transmitted Disease
	In Those With Characteristic % (n)	In Those Without Characteristic % (n)	With to Without Characteristic Adjusted* Odds Ratio 95% CI OR
Partner characteristics
STD in past yr	46.2% (119)	19.1% (204)	3.4	2.0, 5.7
≥5 yr age difference	44.9% (98)	23.3% (296)	2.6	1.6, 4.5
Previously in jail	35.8% (123)	23.2% (233)	1.6	0.9, 2.5
Had other partners in past yr	26.9% (234)	22.3% (94)	1.2	0.8, 2.6
Alcohol problem	29.4% (194)	26.7% (206)	1.2	0.8, 1.9
Marijuana problem	31.5% (143)	26.1% (257)	1.0	0.7, 1.7
Individual sexual activities
Did not use a condom during last sexual experience	34.2% (234)	19.2% (172)	2.1	1.3, 3.4
Use a condom less than nearly always during sexual activities†	32.3% (269)	19.4% (134)	1.8	1.1, 3.1
Casual partner in the past yr‡	29.3% (287)	22.8% (123)	1.7	1.0, 3.0
≥10 sexual partners in lifetime	31.7% (218)	22.2% (189)	1.6	1.0, 2.6
Sexual activities under the influence of alcohol	27.9% (158)	27.2% (254)	1.5	0.9, 2.5
Concurrent partners in the past yr§	30.3% (195)	23.8% (214)	1.3	0.8, 2.1
≥3 sexual partners in the past yr	27.5% (211)	27.6% (196)	1.1	0.7, 1.8
New partner in the past mo	28.0% (150)	27.1% (262)	1.1	0.7, 1.7
Age at first intercourse ≤15 yr	30.0% (243)	23.7% (169)	1.0	0.6, 1.6

^*Adjusted for race, age, sex, and medical insurance.

^†Analyses compared 2 categories of condom use: always and nearly always versus more than half the time, half of the time, less than half of the time, and never.

^‡Variable not included in the composite variable.

^§Participants were defined as having concurrent partners in the past 12 mo if they reported >1 partner for “the largest number of people you have been in a sexual relationship with at the same time.”

% indicates percent with STD with given characteristic; n, total no. adolescents in each group; OR, odds ratio; CI, confidence interval.