. 2020 Jul 22;128(7):077005. doi: 10.1289/EHP6837

Table 2.

Demographic characteristics of the 344 Wilmington, North Carolina, GenX exposure study participants.

Characteristic	November 2017 ( $n equals 310$ ) [ $n$ (%)]	November 2017 (resampled May 2018) ( $n equals 44$ ) [ $n$ (%)]	May 2018 ( $n equals 34$ ) [ $n$ (%)]
Adult/child
Adult ( $greater than or equal to 18 years$ )	256 (82.6)	42 (95.5)	33 (97.1)
Child	54 (17.4)	2 (4.6)	1 (2.94)
Age group (y)^a
6–17	54 (17.5)	2 (4.6)	1 (3.1)
18–29	12 (3.9)	1 (2.3)	2 (6.3)
30–39	37 (12.0)	4 (9.1)	2 (6.3)
40–49	57 (18.4)	10 (22.7)	2 (6.3)
50–59	51 (16.5)	9 (20.5)	4 (12.5)
60–69	62 (20.1)	9 (20.5)	13 (40.6)
70–86	36 (11.7)	9 (20.5)	8 (25.0)
Gender
Female	189 (61.0)	28 (63.6)	27 (79.4)
Male	120 (38.7)	16 (36.4)	7 (20.6)
Transgender	1 (0.3)	0	0
Race/ethnicity^b
Black, non–Hispanic	8 (2.6)	0	27 (79.4)
Hispanic, regardless of race	33 (10.7)	3 (7.0)	0
White, non–Hispanic	261 (84.7)	40 (93.0)	4 (11.8)
Other^c	6 (2.0)	0	3
Spanish speaker	17 (5.5)	0	0
Residence in lower Cape Fear Region (y)^d
1–9	88 (28.5)	10 (22.7)	6 (18.8)
10–19	112 (36.3)	18 (40.9)	7 (21.9)
20–39	76 (24.6)	6 (13.6)	6 (18.8)
40–49	16 (5.2)	5 (11.4)	3 (9.4)
50–73	17 (5.5)	5 (11.4)	10 (31.3)
Drinking water source^e
CFPUA groundwater	5 (1.6)	1 (2.3)	2 (5.9)
CFPUA Cape Fear River	301 (97.7)	42 (97.7)	32 (94.1)
Not served by CFPUA	2 (0.7)	0	0
Number of households	201	35	30
Participants per household
1	130 (64.7)	28 (80.0)	26 (86.7)
2	46 (22.9)	6 (17.4)	4 (13.3)
3	12 (6.0)	0	0
4	13 (6.5)	1 (2.9)	0

Note: CFPUA, Cape Fear Public Utility Authority; GenX, hexafluoropropylene oxide dimer acid.

^{^a}

Missing age for three participants.

^{^b}

Missing race/ethnicity for two participants.

^{^c}

Other includes mixed-race individuals Native American/Pacific Islander, black or African American and Native American/Pacific Islander and white and other, Native American/Pacific Islander and white. May 2018: Other includes: American Indian/Alaska Native and Black or African American, black or African American and Native American/Pacific Islander and white, black or African American and white.

^{^d}

Missing years lived in lower Cape Fear River Region for 1 participant for the November 2017/May 2018 repeaters and 2 participants for the May 2018 new participants.

^{^e}

CFPUA distributes drinking water to New Hanover County, home of the City of Wilmington. Missing water source for 2 participants for November 2017, 1 participant for May 2018 repeaters.