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. Author manuscript; available in PMC: 2024 Jan 1.
Published in final edited form as: Environ Res. 2022 Nov 9;216(Pt 4):114759. doi: 10.1016/j.envres.2022.114759

Table 1.

Characteristics of the study population overall and by ECHO-PATHWAYS cohort

Total CANDLE GAPPS TIDES
Characteristic N=1118 N=609 N=112 N=397

Child age at CBCL assessment (years), mean +/− SD 5.12 ± 1.03 4.27 ± 0.34 5.44 ± 0.68 6.33 ± 0.35
CBCL Study Form
 Preschool 701 (62.7%) 609 (100.0%) 92 (82.1%) 0 (0.0%)
 School age 417 (37.3%) 0 (0.0%) 20 (17.9%) 397 (100.0%)
Child sex
 Male 537 (48.0%) 298 (48.9%) 53 (47.3%) 186 (46.9%)
 Female 581 (52.0%) 311 (51.1%) 59 (52.7%) 211 (53.1%)
Child race
 White 551 (49.3%) 179 (29.4%) 86 (76.8%) 286 (72.0%)
 Black 427 (38.2%) 386 (63.4%) 3 (2.7%) 38 (9.6%)
 Asian 26 (2.3%) 6 (1.0%) 1 (0.9%) 19 (4.8%)
 American Indian/Alaska Native 6 (0.5%) 2 (0.3%) 1 (0.9%) 3 (0.8%)
 Other 83 (7.4%) 30 (4.9%) 18 (16.1%) 35 (8.8%)
 Multiple 25 (2.2%) 6 (1.0%) 3 (2.7%) 16 (4.0%)
Maternal age at delivery (years), mean +/− SD 29.28 ± 5.75 27.35 ± 5.60 30.84 ± 5.04 31.79 ± 5.04
Income adjusted for household count (U.S. dollars), mean +/− SD 73114.71 ± 54693.13 42700.04 ± 29515.13 104334.30 ± 49999.95 110963.40 ± 57140.16
Household count, mean +/− SD 4.32 ± 1.25 4.40 ± 1.34 4.55 ± 1.24 4.14 ± 1.08
Household count categories
 2–3 240 (21.5%) 136 (22.3%) 15 (13.4%) 89 (22.4%)
 4 478 (42.8%) 228 (37.4%) 48 (42.9%) 202 (50.9%)
 5 244 (21.8%) 143 (23.5%) 28 (25.0%) 73 (18.4%)
 5+ 156 (14.0%) 102 (16.7%) 21 (18.8%) 33 (8.3%)
Maternal education
 Less than high school/high school/GED 284 (25.4%) 247 (40.6%) 10 (8.9%) 27 (6.8%)
 Vocational or Technical school or Associates degree 152 (13.6%) 73 (12.0%) 28 (25.0%) 51 (12.8%)
 College degree 328 (29.3%) 166 (27.3%) 40 (35.7%) 122 (30.7%)
 Graduate or professional degree 354 (31.7%) 123 (20.2%) 34 (30.4%) 197 (49.6%)
Marital status
 Married or living with partner 813 (72.7%) 366 (60.1%) 104 (92.9%) 343 (86.4%)
 Not married or living as single 305 (27.3%) 243 (39.9%) 8 (7.1%) 54 (13.6%)
Child was first born
 No 621 (55.5%) 369 (60.6%) 78 (69.6%) 174 (43.8%)
 Yes 497 (44.5%) 240 (39.4%) 34 (30.4%) 223 (56.2%)
Pre-pregnancy maternal BMI, mean +/− SD 27.00 ± 7.31 28.38 ± 7.82 26.86 ± 7.52 24.93 ± 5.80
Child gestational age (days), mean +/− SD 274.32 ± 9.95 273.57 ± 8.90 274.28 ± 10.42 275.48 ± 11.19
Prenatal alcohol use
 None 1012 (90.5%) 562 (92.3%) 103 (92.0%) 347 (87.4%)
 Any 106 (9.5%) 47 (7.7%) 9 (8.0%) 50 (12.6%)
Pre- and post-natal secondhand smoke exposure
 None 920 (82.3%) 471 (77.3%) 99 (88.4%) 350 (88.2%)
 Any 198 (17.7%) 138 (22.7%) 13 (11.6%) 47 (11.8%)
Postnatal maternal smoking
 None 1060 (94.8%) 568 (93.3%) 111 (99.1%) 381 (96.0%)
 Any 58 (5.2%) 41 (6.7%) 1 (0.9%) 16 (4.0%)
Maternal stress (Perceived Stress Scale), mean +/− SD 2.27 ± 0.70 2.34 ± 0.73 2.24 ± 0.71 2.16 ± 0.64
Maternal depression (PROMIS score), mean +/− SD 48.37 ± 7.24 48.33 ± 6.89 49.09 ± 7.60 48.24 ± 7.66
Child breastfeeding
 None 217 (19.4%) 186 (30.5%) 5 (4.5%) 26 (6.5%)
 <6 months 338 (30.2%) 239 (39.2%) 27 (24.1%) 72 (18.1%)
 ≥ 6 months 563 (50.4%) 184 (30.2%) 80 (71.4%) 299 (75.3%)
Recruitment site
 Memphis 609 (54.5%) 609 (100.0%) 0 (0.0%) 0 (0.0%)
 San Francisco 109 (9.7%) 0 (0.0%) 0 (0.0%) 109 (27.5%)
 Minneapolis 127 (11.4%) 0 (0.0%) 0 (0.0%) 127 (32.0%)
 Rochester 82 (7.3%) 0 (0.0%) 0 (0.0%) 82 (20.7%)
 Seattle - TIDES 79 (7.1%) 0 (0.0%) 0 (0.0%) 79 (19.9%)
 Seattle - GAPPS 50 (4.5%) 0 (0.0%) 50 (44.6%) 0 (0.0%)
 Yakima 62 (5.5%) 0 (0.0%) 62 (55.4%) 0 (0.0%)
Child Opportunity Index Education score (z-score), mean +/− SD −0.01 ± 0.08 −0.05 ± 0.06 0.00 ± 0.06 0.04 ± 0.08
Child Opportunity Index Social and Economic score (z-score), mean +/− SD −0.00 ± 0.24 −0.09 ± 0.24 0.08 ± 0.12 0.11 ± 0.20