Table 2.
Distribution of Mothers in the Denver, Colorado, Metropolitan Area by Income Quartile, Estimated From Household Postal Zip Code
| Household | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 |
|---|---|---|---|---|
| Income quartiles 2017 | >$125 000 | $69 000–$125 000 | $35 000–$68 000 | <$35 000 |
| Population distributiona | ||||
| Black American | 3 (13%) | 5 (22%) | 6 (26%) | 9 (39%) |
| White | 32 (25%) | 22 (18%) | 33 (26%) | 39 (31%) |
| Choline plasma concentration 16 wks. gestation mean μM (SE) | ||||
| Black American | 6.18 (1.05) | 5.38 (0.81) | 5.31 (0.68) | 5.42 (0.64)b |
| White | 6.83 (0.32) | 6.46 (0.39) | 6.06 (0.32) | 6.87 (0.29) |
Note:aχ 2df3 = 1.85, P = .6.
bComparison with Whites in Quartile 4, P = .04.