TABLE 3.

Selected sexual behaviors in various subsamples of partnerships, by gender

Measure	All partnerships		Restricted partnerships		All partnerships (adjusted)		Matched couples
	Women (N=549)	Men (N=750)	Women (N=157)	Men (N=330)	Women (N=549)	Men (N=750)	Women (N=280)	Men (N=280)
Time until first sex (mos.)	4.9	3.7*	3.8	3.2	4.8	3.7	3.4	3.4
Frequency of sex (first month)
1–4 times	57.5	62.9*	57.4	62.6	59.0	61.5	10.1	10.8
5–14 times	30.8	29.8	34.8	29.2	31.2	29.7	22.7	30.6
≥15	11.8	7.3	7.7	8.2	9.7	8.9	67.2	58.6
Frequency of sex (last month)
0	31.4	41.6***	24.4	31.7	35.7	38.2	16.9	17.9
1–4 times	31.8	34.0	34.0	37.2	33.2	32.9	27.0	23.3
5–14 times	24.5	16.3	29.5	20.1	20.6	19.4	39.6	40.5
≥15	12.4	8.2	12.2	11.0	10.5	9.6	16.6	18.3
Used any contraceptive (first month)	67.0	71.4	69.4	72.5	72.0	67.4	62.8	62.5
Used condoms (first month)
Rarely/never	43.7	31.4***	41.0	31.6**	38.7	34.9	43.7	46.4
Sometimes/mostly	15.7	13.0	18.0	11.9	14.5	14.1	16.9	16.4
Always	40.6	55.6	41.0	56.5	46.9	51.0	39.4	37.1
Used condoms (last month)
No sex	31.6	41.1***	25.8	31.4***	36.2	37.5	17.6	20.4
Rarely/never	43.5	23.7	47.7	28.1	32.0	31.9	49.6	50.4
Sometimes/mostly	8.2	6.6	9.7	7.0	7.4	7.3	11.5	11.1
Always	16.6	28.7	16.8	33.5	24.3	23.4	21.2	18.2
Ever used condoms	64.5	75.7***	68.0	76.4*	70.1	71.7	62.7	60.7
Man had other nonmarital partner†	17.3	25.1***	17.2	20.9	20.4	22.4	10.7	12.9
Woman had other nonmarital partner‡	6.7	25.1***	6.4	25.5***	9.5	21.0***	3.9	8.2*

^*p≤.05.

^**p≤.01.

^***p≤.001.

^†Compares men’s reports of infidelity with women’s suspicion of their partner’s infidelity.

^‡Compares women’s reports of infidelity with men’s suspicion of their partner’s infidelity.

Notes: “First month” refers to the first month of sexual activity in the relationship. Chi-square and t tests were used to assess differences in the all-partnerships and restricted-partnerships samples; Z tests were used for the all-partnerships adjusted sample; and McNemar, Wilcoxon signed rank and chi-square tests were used for the matched-couples sample.