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. 2018 Feb 6;319(5):474–483. doi: 10.1001/jama.2017.21896

Table 1. Maternal and Child Characteristics of Consortium Study Participants at 4 Community Sites in the United Statesa.

Midwestern City Rocky Mountain City Southeastern Countyb Pacific Southwestern City
Children
Age, mean (SD), mo 81.8 (4.4) 83.3 (5.5) 81.5 (4.3) 87.5 (6.7)
Boys, No. (%) 186 (51.1) 132 (50.0) 190 (50.0) 418 (51.6)
Mothers
Current age, mean (SD), y 35.7 (5.5) 34.3 (5.8) 34.9 (5.9) 36.5 (6.8)
Hispanic ethnicity, No. (%) 15 (3.9) 8 (3.0) 78 (20.1) 486 (60.1)
Race, No. (%)
White 347 (91.3) 232 (87.5) 283 (74.7) 668 (82.6)
Black 11 (2.9) 5 (1.9) 68 (17.9) 20 (2.5)
Asian or Pacific Islander 5 (1.3) 5 (1.9) 10 (2.6) 82 (10.1)
Native American/Alaska Native 12 (3.2) 19 (7.2) 3 (0.8) 3 (0.4)
Mixed/other 5 (1.3) 4 (1.5) 15 (3.9) 36 (4.4)
Estimated current annual household income, US $, No. (%)
0-9999 12 (3.4) 15 (6.5) 17 (5.1) 36 (4.7)
10 000-14 999 5 (1.4) 9 (3.9) 16 (4.8) 66 (8.6)
15 000-19 999 13 (3.7) 9 (3.9) 16 (4.8) 79 (10.3)
20 000-24 999 7 (2.0) 18 (7.8) 23 (6.9) 84 (11.0)
25 000-34 999 28 (7.9) 21 (9.1) 46 (13.8) 96 (12.6)
35 000-49 999 44 (12.4) 35 (15.2) 44 (13.2) 89 (11.6)
50 000-74 999 66 (18.5) 47 (20.3) 50 (13.2) 88 (11.5)
≥75 000 181 (50.8) 77 (33.3) 122 (36.5) 226 (29.6)
Parity, mean (SD) 2.7 (1.1) 2.6 (1.2) 2.7 (1.2) 2.6 (1.2)
Maternal marital status, No. (%)
Married 291 (77.6) 196 (75.4) 244 (64.9) 500 (61.8)
Widowed 1 (0.3) 1 (0.4) 0 9 (1.1)
Divorced 26 (6.9) 19 (7.3) 19 (5.1) 65 (8.0)
Separated 7 (1.9) 7 (2.7) 19 (5.1) 48 (5.9)
Single 39 (10.4) 19 (7.3) 41 (10.9) 76 (9.4)
Unmarried, living with partner 11 (2.9) 18 (6.9) 53 (14.1) 111 (13.7)
a

Percentages may not sum to 100 due to rounding.

b

Consists of 1 county that included 3 midsized to small cities and rural areas.