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Table 9 True versus approximated leave spells: Proportional hazard models

From: Does the IAB employment sample reliably identify maternity leave taking? A data reportKann die IAB-Beschäftigtenstichprobe benutzt werden, um Erziehungsurlaub verlässlich zu identifizieren? Ein Daten-Report

Panel A: All
  All spells 1st spell
  True, 1st incl. True, 1st excl. Approx. True, 1st incl. True, 1st excl. Approx.
  N = 18.937 N = 17.655 N = 22.219 N = 13.180 N = 12.314 N = 15.137
East 2.108 (0.095) 2.100 (0.100) 1.850 (0.080) 2.456 (0.119) 2.453 (0.124) 2.139 (0.099)
Foreign 1.313 (0.057) 1.339 (0.060) 1.309 (0.046) 1.331 (0.071) 1.366 (0.076) 1.292 (0.057)
Medium-skilled 1.023 (0.029) 1.037 (0.030) 0.990 (0.024) 0.962 (0.034) 0.974 (0.035) 0.954 (0.029)
High-skilled 1.276 (0.066) 1.312 (0.070) 1.163 (0.054) 1.235 (0.077) 1.271 (0.082) 1.180 (0.068)
Log-wage 1.190 (0.029) 1.194 (0.030) 1.204 (0.026) 1.504 (0.053) 1.512 (0.055) 1.448 (0.046)
Full-time 1.221 (0.030) 1.221 (0.031) 1.169 (0.027) 1.214 (0.046) 1.215 (0.048) 1.185 (0.041)
Age 0.940 (0.023) 0.948 (0.024) 0.898 (0.019) 0.876 (0.026) 0.884 (0.028) 0.828 (0.022)
Age2 1.001 0.000 1.001 0.000 1.002 0.000 1.002 (0.001) 1.002 (0.001) 1.003 0.000
ML
12 months 0.960 (0.033) 0.942 (0.033) 0.949 (0.030) 0.953 (0.040) 0.925 (0.040) 0.926 (0.036)
15 months 0.908 (0.033) 0.887 (0.033) 0.915 (0.031) 0.924 (0.041) 0.902 (0.042) 0.913 (0.038)
18 months 0.843 (0.028) 0.828 (0.028) 0.836 (0.026) 0.847 (0.035) 0.830 (0.035) 0.827 (0.031)
36 (18) months 0.779 (0.028) 0.769 (0.028) 0.776 (0.025) 0.778 (0.034) 0.768 (0.035) 0.772 (0.031)
36 (24) months 0.723 (0.024) 0.710 (0.024) 0.737 (0.022) 0.717 (0.029) 0.703 (0.029) 0.724 (0.027)
Panel B: West, Germans
  All spells 1st spell
  True, 1st incl. True, 1st excl. Approx. True, 1st incl. True, 1st excl. Approx.
  N = 17.663 N = 16.479 N = 20.226 N = 12.206 N = 11.413 N = 13.692
Medium-skilled 1.034 (0.031) 1.046 (0.033) 1.019 (0.027) 0.971 (0.037) 0.979 (0.038) 0.978 (0.033)
High-skilled 1.307 (0.071) 1.334 (0.075) 1.198 (0.059) 1.264 (0.084) 1.288 (0.089) 1.201 (0.074)
Log-wage 1.157 (0.029) 1.162 (0.030) 1.163 (0.027) 1.481 (0.055) 1.492 (0.058) 1.410 (0.048)
Full-time 1.217 (0.031) 1.213 (0.033) 1.156 (0.028) 1.199 (0.049) 1.190 (0.051) 1.152 (0.044)
Age 0.951 (0.024) 0.958 (0.025) 0.895 (0.020) 0.882 (0.028) 0.889 (0.030) 0.815 (0.023)
Age2 1.001 0.000 1.001 0.000 1.002 (0.000) 1.002 (0.001) 1.002 (0.001) 1.004 0.000
ML
12 months 0.974 (0.034) 0.957 (0.034) 0.957 (0.031) 0.965 (0.041) 0.937 (0.041) 0.935 (0.037)
15 months 0.919 (0.034) 0.900 (0.035) 0.925 (0.032) 0.927 (0.042) 0.907 (0.042) 0.926 (0.040)
18 months 0.852 (0.029) 0.837 (0.029) 0.839 (0.027) 0.852 (0.036) 0.834 (0.036) 0.830 (0.032)
36 (18) months 0.786 (0.029) 0.778 (0.029) 0.771 (0.026) 0.786 (0.035) 0.776 (0.036) 0.774 (0.032)
36 (24) months 0.743 (0.025) 0.730 (0.025) 0.750 (0.023) 0.736 (0.030) 0.721 (0.030) 0.744 (0.028)
Panel C: West, Foreigners
  All spells 1st spell
  True, 1st incl. True, 1st excl. Approx. True, 1st incl. True, 1st excl. Approx.
  N = 851 N = 787 N = 1.400 N = 564 N = 522 N = 868
Medium-skilled 0.984 (0.080) 0.984 (0.083) 0.870 (0.056) 0.956 (0.096) 0.974 (0.102) 0.874 (0.072)
High-skilled 0.813 (0.214) 0.981 (0.257) 0.741 (0.180) 0.872 (0.260) 1.157 (0.328) 1.040 (0.274)
Log-wage 1.582 (0.181) 1.547 (0.182) 1.494 (0.130) 1.488 (0.215) 1.417 (0.207) 1.401 (0.152)
Full-time 1.171 (0.131) 1.214 (0.140) 1.172 (0.098) 1.566 (0.219) 1.725 (0.238) 1.446 (0.158)
Age 0.899 (0.075) 0.931 (0.082) 0.932 (0.059) 0.838 (0.086) 0.850 (0.091) 0.921 (0.078)
Age2 1.002 (0.002) 1.001 (0.002) 1.001 (0.001) 1.003 (0.002) 1.003 (0.002) 1.001 (0.002)
ML
12 months 0.701 (0.111) 0.697 (0.116) 0.837 (0.101) 0.683 (0.150) 0.684 (0.156) 0.750 (0.133)
15 months 0.718 (0.126) 0.674 (0.126) 0.790 (0.109) 0.867 (0.261) 0.811 (0.204) 0.668 (0.135)
18 months 0.667 (0.101) 0.673 (0.105) 0.779 (0.089) 0.681 (0.136) 0.679 (0.137) 0.717 (0.116)
36 (18) months 0.628 (0.101) 0.623 (0.103) 0.823 (0.098) 0.602 (0.126) 0.598 (0.127) 0.698 (0.116)
36 (24) months 0.455 (0.068) 0.451 (0.070) 0.607 (0.068) 0.445 (0.087) 0.434 (0.086) 0.487 (0.077)
Panel D: East
  All spells       
  True, 1st incl. True, 1st excl. Approx.       
  N = 422 N = 388 N = 588       
Medium-skilled 1.027 (0.255) 1.099 (0.293) 0.810 (0.165)       
High-skilled 1.319 (0.468) 1.379 (0.511) 0.978 (0.292)       
Log-wage 2.376 (0.383) 2.412 (0.410) 2.652 (0.372)       
Full-time 1.292 (0.206) 1.337 (0.219) 1.377 (0.180)       
Age 0.834 (0.132) 0.834 (0.156) 0.891 (0.102)       
Age2 1.002 (0.003) 1.002 (0.003) 1.002 (0.002)       
1994 1.114 (0.116) 1.077 (0.117) 1.034 (0.094)       
  1. Note: The table compares results from proportional hazard models in the IABS, after imposing my preferred restrictions (“Approx.”), with those in the Pension Register (“true”). Here, I distinguish samples. In the first column, spells that start on the first of a month are included in the sample. In the second column, they are excluded. Robust standard errors in parentheses.