Table 2.

Percentage distributions of dual method contraceptive use with and without condoms, and adjusted relative risk ratios and confidence intervals of dual method users including and excluding condoms compared to single method users, among all sexually active women ages 15–44 using a contraceptive method at last sex in the past three months in the NSFG, 2015 (N = 4179)

	Dual method condom users vs Single method users				Dual method users without condoms vs Single method users
	Percent	RRR	Confidence Intervals		Percent	RRR	Confidence Intervals
Overall	10.3%				7.5%
Age
15–19 y	32.3%				9.0%
20–24 y	17.5%	0.59	0.36	0.98b	11.8%	1.34	0.66	2.72
25–29 y	10.8%	0.48	0.30	0.76c	6.3%	0.69	0.36	1.30
30–34 y	6.2%	0.34	0.19	0.63d	6.3%	0.72	0.30	1.72
35–39 y	5.5%	0.38	0.20	0.75c	4.7%	0.55	0.25	1.20
40–44 y	3.7%	0.25	0.12	0.52d	8.2%	0.96	0.42	2.21
Race
White	10.9%				8.6%
Black, NH	15.1%	0.84	0.59	1.21	4.2%	0.43	0.27	0.68d
Other/Multiple, NH	5.0%	0.40	0.26	0.62d	10.6%	1.07	0.63	1.81
Hispanic	8.7%	0.65	0.44	0.96b	4.6%	0.48	0.28	0.83c
Poverty
0–99%	11.5%				7.5%
100–199%	10.5%	0.86	0.54	1.35	6.3%	0.59	0.34	1.03
200–299%	10.8%	0.89	0.58	1.35	8.3%	0.75	0.37	1.53
300%+	9.3%	0.80	0.53	1.21	7.8%	0.65	0.35	1.23
Relationship status
Married	2.7%				6.3%
Cohabitating	6.7%	1.89	1.24	2.90c	7.3%	1.14	0.68	1.92
Not married or cohabitating	23.2%	6.73	4.36	10.38d	9.2%	1.89	1.18	3.03c
Educational attainment
Not HS grad	13.5%				6.1%
HS grad/GED	8.4%	0.78	0.50	1.24	5.4%	0.89	0.48	1.67
Some college	12.0%	1.08	0.73	1.62	9.7%	1.69	1.01	2.82b
College grad	8.8%	1.27	0.69	2.32	7.2%	1.31	0.72	2.38
Current insurance coverage
Private	10.6%				7.9%
Medicaid	10.3%	0.66	0.45	0.96b	5.4%	0.50	0.23	1.08
Other public	12.4%	1.19	0.62	2.27	12.6%	1.73	0.67	4.50
None	8.7%	0.79	0.51	1.22	6.8%	0.92	0.48	1.76
Parity
None	19.3%				9.7%
1–2	6.1%	0.73	0.51	1.02	6.3%	0.95	0.59	1.51
3+	4.1%	0.62	0.38	1.01	6.3%	1.08	0.61	1.90
Ever same sex sexual experience
Never	10.4%				6.9%
Has experienced	9.9%	0.65	0.46	0.91b	10.2%	1.47	0.95	2.29
Had sex with non-monogamous partnera
No sex with non-monogamous partner	9.2%				7.6%
Had sex with non-monogamous partner	21.2%	1.02	0.72	1.45	5.8%	0.50	0.29	0.86b
Received tests or treatment for STDsa
No STD test/treatment	7.2%				7.2%
Received STD test/treatment	16.2%	1.58	1.13	2.19c	8.0%	1.19	0.82	1.73

Notes: Population includes female respondents who had sex in the past 3 months and were 15–44 years old. Population weighted to reflect the US female civilian population of the United States. Multinomial logistic regression models were used to test for significant differences in the proportion of dual method use with and without condoms by user characteristics to single method use by user characteristics.

^aIn the 12 months prior to interview.

^bSignificant difference between years at p < 0.05 based on multinomial logistic regression analyses.

^cSignificant difference between years at p < 0.01 based on multinomial logistic regression analyses.

^dSignificant difference between years at p < 0.001 based on multinomial logistic regression analyses.