Black Children | White Children | |||||
---|---|---|---|---|---|---|
Four-Year Window | Three-Year Window | Two-Year Window | Four-Year Window | Three-Year Window | Two-Year Window | |
Ages 4–7 | ||||||
Linear | −0.269* (0.136) | −0.254 (0.169) | −0.257 (0.193) | −0.074 (0.045) | −0.010 (0.047) | 0.022 (0.058) |
Linear spline | −0.275** (0.122) | −0.267* (0.137) | −0.276 (0.167) | −0.075 (0.045) | −0.010 (0.048) | 0.022 (0.058) |
Quadratic | −0.269** (0.128) | −0.254* (0.141) | −0.257 (0.165) | −0.074 (0.045) | −0.010 (0.047) | 0.022 (0.058) |
Quadratic spline | −0.226 (0.160) | −0.108 (0.192) | −0.191 (0.244) | 0.086 (0.065) | 0.088 (0.072) | 0.075 (0.084) |
Baseline mean | 2.093 | 2.094 | 2.147 | 1.196 | 1.197 | 1.174 |
N | 192 | 144 | 96 | 192 | 144 | 96 |
Ages 8–14 | ||||||
Linear | −0.048 (0.096) | −0.127 (0.112) | −0.098 (0.134) | 0.107** (0.041) | 0.105** (0.050) | 0.123* (0.063) |
Linear spline | −0.049 (0.094) | −0.130 (0.111) | −0.100 (0.136) | 0.106*** (0.031) | 0.103*** (0.038) | 0.118** (0.046) |
Quadratic | −0.046 (0.094) | −0.123 (0.109) | −0.095 (0.135) | 0.110*** (0.033) | 0.108*** (0.039) | 0.128*** (0.047) |
Quadratic spline | −0.119 (0.148) | −0.054 (0.157) | −0.120 (0.164) | 0.089* (0.046) | 0.071 (0.054) | 0.032 (0.056) |
Baseline mean | 1.864 | 1.792 | 1.785 | 1.227 | 1.183 | 1.146 |
N | 288 | 216 | 144 | 288 | 216 | 144 |
Ages 15–18 | ||||||
Linear | 0.185 (0.423) | 0.025 (0.453) | −0.072 (0.488) | 0.162 (0.203) | 0.035 (0.206) | 0.006 (0.170) |
Linear spline | 0.101 (0.247) | 0.023 (0.294) | −0.039 (0.390) | 0.118 (0.095) | 0.033 (0.110) | 0.022 (0.121) |
Quadratic | 0.041 (0.278) | −0.042 (0.320) | −0.094 (0.421) | 0.085 (0.101) | −0.002 (0.107) | −0.006 (0.117) |
Quadratic spline | −0.062 (0.307) | −0.251 (0.349) | −0.312 (0.449) | 0.055 (0.135) | 0.053 (0.160) | 0.030 (0.145) |
Baseline mean | 6.613 | 6.249 | 5.951 | 4.953 | 4.812 | 4.693 |
N | 192 | 144 | 96 | 192 | 144 | 96 |
Ages 19–23 | ||||||
Linear | 0.071 (0.260) | −0.294 (0.275) | −0.993*** (0.331) | 0.018 (0.120) | −0.074 (0.121) | −0.115 (0.139) |
Linear spline | 0.067 (0.256) | −0.312 (0.239) | −1.024*** (0.302) | 0.006 (0.098) | −0.085 (0.111) | −0.121 (0.139) |
Quadratic | 0.071 (0.260) | −0.294 (0.242) | −0.993*** (0.296) | 0.018 (0.094) | −0.074 (0.107) | −0.115 (0.139) |
Quadratic spline | −0.854*** (0.304) | −1.305*** (0.304) | −1.134*** (0.404) | −0.163 (0.131) | −0.246* (0.136) | −0.211 (0.175) |
Baseline mean | 10.723 | 10.522 | 10.488 | 6.840 | 6.889 | 6.978 |
N | 192 | 144 | 96 | 192 | 144 | 96 |