Table 1.

Characteristics of Home-Visit Study Sample (n = 9,626), the Gulf Long-Term Follow-up Study, 2011–2013

Characteristic	Level (Percentiles)
	1 (1st–24th)		2 (25th–49th)		3 (50th–74th)		4 (75th–100th)
	No.	%	No.	%	No.	%	No.	%
Age at home visit, yearsa	47 (14)		46 (13)		44 (13)		42 (12)
Total no. of participants	439	5	2,177	23	3,390	35	3,620	38
Sex
Male	350	80	1,677	77	2,653	78	2,822	78
Female	89	20	500	23	737	22	798	22
Race
White	378	86	1,608	74	2,061	61	1,249	35
Black	28	6	344	16	932	27	2,033	56
Other	33	8	225	10	397	12	338	9
Ethnicity
Hispanic	26	6	113	5	220	6	218	6
Non-Hispanic	413	94	2,064	95	3,170	94	3,402	94
Smoking status
Heavy current smoker	29	7	249	11	512	15	422	12
Light current smoker	52	12	461	21	806	24	986	27
Former smoker	133	30	525	24	710	21	655	18
Never smoker	225	51	942	43	1,362	40	1,557	43
Drinking status
Current drinker	373	85	1,681	77	2,367	70	2,457	68
Former drinker	56	13	387	18	768	23	847	23
Never drinker	10	2	109	5	255	8	316	9
Education
Less than high school/equivalent	24	5	269	12	754	22	943	26
High school diploma/GED	72	16	621	29	1,209	36	1,368	38
Some college/2-year degree	137	31	752	35	979	29	1,054	29
≥4-year college graduate	206	47	535	25	448	13	255	7
Employment
Working now	317	72	1,340	62	1,843	54	1,705	47
Looking for work/unemployed	53	12	417	19	887	26	1,257	35
Other	69	16	420	19	660	19	658	18
Household income, USD
<20,000	57	13	564	26	1,328	39	1,874	52
20,000–49,000	112	26	777	36	1,131	33	1,185	33
≥50,000	270	62	836	38	931	27	561	16
Weight categoriesb
Normal	126	29	521	24	798	24	931	26
Overweight	157	36	792	36	1,151	34	1,093	30
Obese	156	36	864	40	1,441	43	1,596	44
Waist-to-hip ratioc
Normal	134	31	581	27	886	26	1,059	29
Centrally obese	305	69	1,596	73	2,504	74	2,561	71
Diabetes
No	414	93	1,980	91	3,035	90	3,281	91
Yes (diagnosed or taking medications)	30	7	197	9	355	10	339	9

Abbreviations: BMI, body mass index; GED, General Education Development test.

^a Values are expressed as mean (standard deviation).

^b BMI calculated as weight (kg)/height (m)² and categorized as follows: normal, <25.0; overweight, 25.0–29.9; obese, ≥30.0.

^c Categories: normal, ratio ≤0.85 for women, ≤0.90 for men; centrally obese, ratio >0.85 for women, >0.90 for men.