Table IV.
Birthweight and gestational age regression coefficients with 95 per cent credible intervals for each mixture model component.
| Covariate | Component k=1 | Component k=2 | Component k=3 | ||||
|---|---|---|---|---|---|---|---|
| BW | Reported maternal smoking | −205.0 | (−211.6,−198.4) | −227.8 | (−241.3,−214.6) | −85.1 | (−116.3,−53.9) |
| Male infant | 137.2 | (133.2,141.2) | 80.7 | (72.4,88.9) | 52.6 | (29.7,75.7) | |
| Mother reported not married | −26.4 | (−31.5,−21.2) | −40.3 | (−51.0,−29.7) | −83.6 | (−109.8,−57.3) | |
| Non-Hispanic black mother | −188.4 | (−193.7,−183.0) | −231.0 | (−241.8,−220.0) | −318.0 | (−344.9,−291.2) | |
| Hispanic mother | −49.1 | (−56.1,−42.1) | 44.0 | (29.6,58.5) | 111.3 | (76.5,145.9) | |
| Mother complete MS | −26.3 | (−35.8,−16.9) | −8.8 | (−27.7,10.1) | 23.5 | (−18.5,65.1) | |
| Mother complete some HS | −35.9 | (−42.5,−29.4) | −24.9 | (−38.0,−11.7) | 10.8 | (−20.6,42.0) | |
| Mother complete some college | 20.1 | (14.4,25.8) | 47.2 | (35.4,59.2) | 49.6 | (20.4,78.7) | |
| Mother complete college | 27.8 | (21.5,34.2) | 125.9 | (112.9,139.0) | 201.5 | (169.6,233.1) | |
| Maternal age 15–19 | −51.1 | (−59.1,−43.0) | 8.5 | (−7.5,24.4) | 43.8 | (8.0,79.3) | |
| Maternal age 20–24 | −29.6 | (−35.3,−24.0) | 12.2 | (0.7,23.7) | 71.0 | (42.3,100.0) | |
| Maternal age 30–34 | 18.6 | (12.8,24.5) | 7.6 | (−4.6,19.9) | 17.1 | (−12.9,46.9) | |
| Maternal age 35–40 | 25.2 | (17.7,32.8) | −41.6 | (−57.1,−25.9) | −15.2 | (−50.2,19.4) | |
| Maternal age 41–45 | 2.3 | (−12.6,17.1) | −88.4 | (−116.5,−60.1) | −35.4 | (−83.2,12.8) | |
| First birth infant | −55.1 | (−59.6,−50.6) | −116.9 | (−126.3,−107.6) | −162.0 | (−186.5,−137.7) | |
| Residuals gestational age | 104.7 | (102.0,107.5) | 146.7 | (143.0,150.4) | 146.2 | (143.1,149.2) | |
| GA | Reported maternal smoking | −0.06 | (−0.08,−0.04) | −0.36 | (−0.41,−0.31) | −0.30 | (−0.50,−0.11) |
| Male infant | −0.01 | (−0.02,−0.00) | −0.12 | (−0.16,−0.09) | −0.09 | (−0.22,0.05) | |
| Mother reported not married | 0.07 | (0.06,0.08) | −0.07 | (−0.11,−0.03) | −0.47 | (−0.63,−0.31) | |
| Non−Hispanic black mother | −0.03 | (−0.05,−0.02) | −0.43 | (−0.47,−0.39) | −1.75 | (−1.91,−1.59) | |
| Hispanic mother | 0.19 | (0.17,0.21) | 0.42 | (0.37,0.47) | 0.52 | (0.30,0.73) | |
| Mother complete MS | 0.08 | (0.06,0.11) | −0.07 | (−0.14,0.01) | −0.04 | (−0.33,0.24) | |
| Mother complete some HS | 0.01 | (−0.00,0.03) | −0.11 | (−0.16,−0.06) | −0.04 | (−0.23,0.16) | |
| Mother complete some college | −0.04 | (−0.05,−0.02) | 0.07 | (0.03,0.12) | 0.20 | (0.02,0.38) | |
| Mother complete college | 0.05 | (0.04,0.07) | 0.39 | (0.34,0.44) | 0.94 | (0.74,1.13) | |
| Maternal age 15–19 | −0.01 | (−0.03,0.01) | 0.09 | (0.03,0.15) | 0.08 | (−0.15,0.31) | |
| Maternal age 20–24 | 0.02 | (0.01,0.03) | 0.11 | (0.06,0.15) | 0.39 | (0.21,0.57) | |
| Maternal age 30–34 | −0.04 | (−0.06,−0.03) | −0.04 | (−0.09,0.00) | 0.12 | (−0.06,0.31) | |
| Maternal age 35–40 | −0.09 | (−0.11,−0.07) | −0.21 | (−0.26,−0.15) | −0.02 | (−0.24,0.20) | |
| Maternal age 41–45 | −0.10 | (−0.13,−0.06) | −0.39 | (−0.51,−0.28) | −0.22 | (−0.59,0.14) | |
| First birth infant | 0.40 | (0.39,0.42) | −0.19 | (−0.23,−0.16) | −0.60 | (−0.75,−0.46) | |