Table 2.

Weighted distribution and unweighted sample sizes of analytical sample, by demographic characteristics and survey

	NSFG				NLSY97 Round 16		Add Health Wave 4
	2006–2010		2011–2015
	%	N	%	N	%	N	%	N
Total	100	12,279	100	11,300	100	3,595	100	7,357
Age at Interview
<20	17	2,284	15	2,047
20–24	17	2,098	17	1,913
25–29	17	2,366	17	2,117	20	698	71	5,055
30–34	15	2,047	17	2,011	80	2,897	29	2,302
35 and older	34	3,484	33	3,212
Race/Ethnicity
White, non-Hispanic	62	6,301	58	5,285	67	1,667	68	3,996
Black, non-Hispanic	14	2,535	15	2,420	16	1,031	16	1,677
Other, non-Hispanic	7	720	8	743	5	118	4	453
Hispanic	17	2,723	20	2,852	12	772	13	1,222
Poverty Statusa
<100%	22	3,361	28	3,900	16	658	40	2,666
100% to 199%	23	2,994	21	2,525	18	629	26	1,866
200+%	54	5,924	51	4,875	66	1,949	33	2,449
Union Status at Time of Interview
Married	41	3,971	38	3,410	49	1,568	56	4,006
Cohabiting	11	1,451	15	1,573	18	652
Formerly married	9	1,260	8	1,110	7	256
Never married	38	5,597	39	5,207	26	1,109	44	3,344
Level of Education
<Grade 12	21	3,072	18	2,542	17	672	8	449
High school diploma or GED	27	3,323	24	2,916	38	1,469	14	999
Some college	28	3,339	30	3,348	9	322	44	3,297
College degree	24	2,545	28	2,494	36	1,118	33	2,611
Religion
Protestant	48	5,756	47	5,518	–– b	–– b	54	3,963
Catholic	25	3,135	22	2,518	–– b	–– b	20	1,580
Other	9	1,037	8	849	–– b	–– b	8	616
None	18	2,351	22	2,415	–– b	–– b	18	1,175
Nativity Status
Foreign-born	15	2,070	16	1,857	5	240	4	432
U.S.-born	85	10,206	84	9,440	95	3,355	96	6,925

^aAt the time of the interview. Measured as personal income in Add Health and as household income in NSFG and NLSY97.

^bNot available.