Design, methods, and participant characteristics of the Impact of Personal Genomics (PGen) Study, a prospective cohort study of direct-to-consumer personal genomic testing customers

Table 2 Demographic characteristics of PGen Study participants

	BL survey responders eligible for follow-up	2 W survey responders	6 M survey responders	6 M-NR survey responders
n	1,464	1,046	1,042	86
Mean age (±SD; range)	47.5 (15.5; 19-94)	46.7 (15.7; 19-91)	46.9 (15.6; 19-94)	47.8 (15.5; 23-94)
Mean self-reported health (±SD) ^a	2.49 (1.01)	2.50 (1.0)	2.49 (1.0)	2.60 (1.1)
Female (%)	61.2	60.1	60.2	70.9
Annual income (%)
<$40,000	16.8	17.5	17.1	18.4
$40,000-$99,999	38.8	38.0	38.8	40.2
$100,000-$199,999	31.7	32.2	31.3	31.0
≥$200,000	12.7	12.3	12.8	10.4
Education (%)
<College degree	21.8	21.0	20.4	25.3
College degree	30.6	30.2	30.0	34.5
Some graduate school	35.0	35.6	36.4	28.7
Doctoral degree	12.6	13.2	13.2	11.5
Marital status (%)
Single	19.2	19.6	19.9	13.8
Long-term partner	13.7	15.2	14.7	13.8
Married	54.4	52.5	52.5	57.5
Widowed/divorced/separated	12.7	12.7	12.9	14.9
Health insurance (%)	94.7	95.5	95.3	96.6
United States residency (%)	97.9	98.0	98.2	97.7
Non-white (%)	15.7	14.7	14.2	10.3
Hispanic/Latino (%)	5.5	4.6	5.1	3.5
23andMe customers (%)	64.7	60.4	62.4	49.4

^aSelf-reported health was measured on a 5-point scale from 1 (poor) to 5 (excellent).
SD, standard deviation.

ISSN: 1756-994X