Table A4.
Ordinary quantile regression coefficients of the child development rate functiona
|
Quantile
|
|||||
|---|---|---|---|---|---|
| 0.1 | 0.25 | 0.5 | 0.75 | 0.9 | |
| Parental/household investment | 4.90***b (0.80) | 4.06***b (0.58) | 3.10***b (0.36) | 2.36***b (0.39) | 2.08***b (0.61) |
| African ancestry | −5.42* (3.04) | −5.45*** (1.96) | −4.24*** (1.28) | −5.03** (2.00) | −3.66** (1.81) |
| Native ancestry | −4.58** (1.83) | −4.29*** (1.18) | −3.41*** (0.75) | −3.12*** (0.79) | −1.84*** (0.70) |
| Socioeconomic status | 0.42 (0.78) | 0.37 (0.54) | 0.40 (0.35) | 0.22 (0.36) | 0.33 (0.30) |
| Maternal mental health problems | −3.38 (2.83) | −1.95 (1.93) | −1.61 (1.66) | −0.46 (1.54) | −2.58 (1.69) |
| Maternal chronic physical health problems | −2.95 (3.74) | −1.34 (2.81) | −0.94 (1.16) | −0.85 (2.11) | 0.059 (1.41) |
| Maternal smoking during prenatal period | −0.45 (2.50) | −0.39 (1.46) | −2.37** (1.02) | −0.70 (1.38) | −0.0058 (1.20) |
| Child has private insurance | −1.50 (2.07) | −2.08 (1.44) | −2.61*** (0.90) | −1.16 (1.01) | −1.13 (0.97) |
| Maternal age | −1.11 (0.97) | −0.93* (0.52) | −0.26 (0.37) | −0.47 (0.44) | −0.14 (0.39) |
| Maternal age squared | 0.021 (0.016) | 0.016* (0.0087) | 0.0042 (0.0065) | 0.0084 (0.0075) | 0.0020 (0.0068) |
| Mother is single | −5.49** (2.52) | −4.35*** (1.42) | −3.73*** (1.00) | −2.95** (1.18) | −0.59 (1.18) |
| Mother is in a stable relationship | −3.32*a (1.91) | −0.91a (1.15) | −1.76**a (0.88) | −0.28a (0.98) | 0.53a (0.81) |
| Child’s age in months | −0.71***c (0.14) | −0.44***c (0.11) | −0.19***c (0.064) | −0.017c (0.063) | 0.060c (0.074) |
| Male child | −4.19***b (1.45) | −3.24*** (0.99) | −1.64** (0.64) | −1.38** (0.70) | −0.91b (0.71) |
| Number of child’s siblings | −1.15b (0.77) | −1.16**b (0.46) | −1.32***b (0.32) | −0.85**b (0.38) | 0.027b (0.38) |
| Disabled sibling | −8.20* (4.72) | −6.95 (4.44) | −4.94** (2.49) | −2.94 (2.35) | −5.01** (2.01) |
| Number of other household members | 0.47 (0.33) | 0.40** (0.20) | 0.46** (0.19) | 0.19 (0.23) | 0.14 (0.15) |
| Brazil | −3.20c (2.31) | −3.64**c (1.56) | −4.76***c (0.95) | −2.54c (1.67) | 0.23c (1.10) |
| Bolivia | −21.9***c (6.46) | −18.3***c (3.96) | −14.3***c (1.84) | −9.20***c (2.33) | −5.97***c (2.06) |
| Chile | −7.39***c (2.10) | −8.17***c (1.55) | −7.02***c (1.02) | −5.02***c (1.00) | −2.27**c (1.15) |
| Ecuador | −6.33***c (2.25) | −7.01***c (1.34) | −7.86***c (0.98) | −7.36***c (1.10) | −2.71**c (1.11) |
| Constant | 15.3 (15.3) | 20.0** (7.81) | 16.9*** (5.26) | 23.0*** (6.50) | 20.2*** (5.78) |
*, ** and ***
indicate p <0.1, <0.05 and <0.01, respectively.
Standard errors are in parentheses.
b and c
indicate that the quantile effects are significantly different at p<0.05 and p<0.01, respectively.
a
Derived from the Bayley Infant Neurodevelopment Screener. Copyright @ 2004. Harcourt Assessment Inc. Used with Permission. All rights Reserved.