Skip to main content
. Author manuscript; available in PMC: 2022 Oct 1.
Published in final edited form as: Environ Int. 2021 May 6;155:106516. doi: 10.1016/j.envint.2021.106516

Table 1.

Demographic data.

All Participants (n=41) Exposed (n=17) Non-exposed (n=24) Group
Comparison
N % N % N % χ2 P
Sex (female) 24 59 9 53 15 63 0.37 .54
Black 19 46 11 52 8 33 3.94 .05
Hispanic 22 53 6 35 16 67
Mean (SD) Range Mean (SD) Range Mean (SD) Range t P
Age (months) 103.8 (9.0) 84-118 102 (10.3) 84-115 105 (7.8) 84-118 1.01 .32
FSIQ 89.8 (13.3) 70-119 90.1 (16.1) 70-119 89.6 (11.3) 72-117 −0.10 .92
Mat. Ed.(years) 12.3 (1.7) 10-16 12.0 (1.4) 10-14 12.6 (1.8) 10-16 0.34 .26
Mat ADHD 35.9 (5.5) 31-57 36.1 (4.6) 31-47 35.8 (6.1) 31-57 −0.18 .86
Cotinine 2.09 (2.9) 0.10-14.2 4.2 (3.5) 1.3-14.2 0.6 (0.26) 0.1-1.0 −4.23 .001

Note: Mat. Ed. = maternal education. Maternal ADHD symptoms were measured with the Connors Adult ADHD Rating Scale. FSIQ = Full Scale Intelligence Quotient.