Table 4.
Cox regression models for second birth 2001 ILFI Survey (All women with a first birth and in a union)
| Variable | Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pooled sample with controls for region and cohort only | Pooled sample with standard controls | Cohort born 1941–50 | Cohort born 1951–60 | Cohort born 1961–70 | ||||||
| Estimate | Standard error | Estimate | Standard error | Estimate | Standard error | Estimate | Standard error | Estimate | Standard error | |
| Individual traits (TV = time-varying) | ||||||||||
| Region (versus Northwest) | ||||||||||
| Northeast | 1.199# | 0.122 | 1.211# | 0.124 | 1.166 | 0.169 | 1.044 | 0.189 | 1.866* | 0.515 |
| Center | 1.211# | 0.121 | 1.229* | 0.125 | 1.093 | 0.157 | 1.086 | 0.198 | 2.192** | 0.590 |
| South | 2.721*** | 0.262 | 2.561*** | 0.252 | 2.484*** | 0.338 | 2.492*** | 0.448 | 3.727*** | 0.986 |
| Cohort (versus 1941–50) | ||||||||||
| Cohort 1951–60 | 0.843** | 0.054 | 0.819** | 0.053 | ||||||
| Cohort 1961–70 | 0.832* | 0.060 | 0.797** | 0.058 | ||||||
| Mother Worked | 1.130* | 0.066 | 1.083 | 1.052 | 1.211# | 0.118 | 1.211# | 0.141 | ||
| Father’s Education (versus Diplome) | ||||||||||
| Father’s education none | 0.884 | 0.099 | 0.640* | 0.116 | 0.998 | 0.193 | 1.089 | 0.240 | ||
| Father’s education low | 0.869 | 0.113 | 0.587* | 0.128 | 0.963 | 0.214 | 1.104 | 0.276 | ||
| Father’s education high | 0.774# | 0.111 | 0.573* | 0.128 | 0.833 | 0.212 | 0.996 | 0.295 | ||
| Father died (TV) | 0.944 | 0.067 | 0.980 | 0.108 | 0.853 | 0.105 | 1.007 | 0.156 | ||
| Mother died (TV) | 0.904 | 0.097 | 0.908 | 0.140 | 0.937 | 0.183 | 0.968 | 0.243 | ||
| Respondent’s education (versus Diplome) | ||||||||||
| Education of respondent low | 1.016 | 0.070 | 1.015 | 0.120 | 1.018 | 0.117 | 0.951 | 0.123 | ||
| Education of respondent high | 1.126 | 0.125 | 0.648* | 0.139 | 1.311 | 0.233 | 1.653* | 0.333 | ||
| Employed (TV) | 0.762*** | 0.045 | 0.810* | 0.078 | 0.811* | 0.081 | 0.683** | 0.081 | ||
| In a civil union (versus Religious) | 0.791 | 0.116 | 0.878 | 0.295 | 0.791 | 0.168 | 0.909 | 0.248 | ||
| First birth timing versus Age 30–34 | ||||||||||
| Age at first birth, 15–19 | 1.300* | 0.170 | 1.741* | 0.408 | 1.003 | 0.203 | 1.604# | 0.429 | ||
| Age at first birth, 20–24 | 1.260* | 0.132 | 1.435* | 0.269 | 1.197 | 0.200 | 1.234 | 0.257 | ||
| Age at first birth, 25–29 | 1.089 | 0.115 | 1.326 | 0.252 | 0.897 | 0.155 | 1.181 | 0.235 | ||
| Age at first birth, 35–49 | 0.383*** | 0.098 | 0.277** | 0.115 | 0.596 | 0.213 | 0.659 | 0.674 | ||
| N Women | 1,855 | 1,855 | 681 | 666 | 508 | |||||
| N Observations | 3,168 | 3,168 | 1,204 | 1,175 | 789 | |||||
| N Events | 1,330 | 1,330 | 516 | 482 | 332 | |||||
| Log-likelihood | −9,123.244 | −9,088.709 | −3,014.994 | −2,819.885 | −1,798.008 | |||||
*** p < 0.001, ** p < 0.01, * p < 0.05, # p < 0.10