Table 1

Demographic characteristics of the AHS participants and adult NHANES participants, 2005–2010

Variable	AHS phase III follow-up participants			NHANES 2005–2010
	Total	Females	Males	Total	Females	Males
	N=43 548 %	N=19 818 %	N=23 730 %	N=17 132 %	N=8829 %	N=8303 %
Type of participant
Applicator	54	3	100
Spouse	46	97	<1
Still farming	53	30	73
Grew up on farm*	74	62	92
Current age group
20–29 years old	<1	<1	<1	19	18	20
30–39 years old	3	3	4	18	18	19
40–49 years old	19	20	18	21	20	21
50–59 years old	30	30	30	18	18	18
60–69 years old	26	27	25	12	12	12
70–79 years old	18	17	19	7	8	7
80+ years old	4	3	5	4	5	3
Race
White	98	98	98	70	69	70
Non-white	2	2	2	30	31	30
Smoking status
Never smoked	68	78	58	53	60	46
Past smoker	25	16	34	24	21	28
Current smoker	7	6	8	22	19	25
Cigarettes/day
<10	29	44	22	49	56	43
11–20	48	44	50	33	31	34
21–40	19	11	23	15	11	19
>40	4	1	5	3	2	4
Years smoked
1–10 years	21	25	20	25	26	25
11–20 years	22	21	22	24	23	25
21–30 years	23	22	23	21	22	20
31–40 years	20	19	20	17	16	18
>40 years	14	13	15	13	13	12
Lifetime pack years
<3	12	18	10	24	26	22
3–10	18	22	17	24	26	23
10.25–27	31	31	30	26	27	26
>27	39	29	43	26	21	29
Current alcohol	57	53	60	81	80	83
BMI category
<25	27	38	19	32	36	27
25–30	49	42	55	38	32	46
>30	24	21	26	30	32	28
Last doctor visit
<1 year	85	85	85	85	91	78
1–3 years	11	11	11	9	6	12
>3 years	4	4	4	6	3	9
Self-reported health status
Excellent	19	20	19	10	10	9
Very good	39	39	40	27	27	27
Good	30	30	30	39	39	39
Fair	9	8	9	20	20	20
Poor	3	3	3	4	4	4

All other variables reported in the most recent interview.
*Available for 75% of participants (those who completed the take-home or spouse at enrolment).
AHS, Agricultural Health Study; BMI, body mass index; NHANES, National Health and Nutrition Examination Survey.