Table 5.
Sensitivity analysis: varying the definition of return and the policy start year
| Varying definition of return | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Part-time vs. Full-time | Stay home vs. Full-time | ||||||||||
| 12 months | 3 months | 4 months | 6 months | 18 months | 12 months | 3 months | 4Vs | 6 months | 18 months | ||
| FMLA in effect | 0.4163b (0.2069) | 0.5678b (0.2534) | 0.6215c (0.2360) | 0.4633b (0.2199) | 0.5074b (0.2031) | 0.2864 (0.1904) | 0.1487 (0.1548) | 0.0036 (0.1623) | 0.2585 (0.1716) | 0.5049b (0.2065) | |
| FMLA time trend (1993–2002) | −0.0462 (0.0703) | −0.1148 (0.0862) | −0.1165 (0.0801) | −0.0766 (0.0748) | −0.0414 (0.0688) | −0.0699 (0.0665) | 0.0493 (0.0547) | 0.0211 (0.0572) | −0.0810 (0.0604) | −0.0811 (0.0718) | |
| Square of FMLA time trend (1993–2002) | 0.0106a (0.0058) | 0.0138b (0.0070) | 0.0137b (0.0065) | 0.0121b (0.0061) | 0.0104a (0.0057) | 0.0146c (0.0055) | 0.0041 (0.0046) | 0.0059 (0.0048) | 0.0140c (0.0050) | 0.0137b (0.0060) | |
| State law in effect | 0.3267c (0.0757) | 0.2926c (0.0959) | 0.3210c (0.0878) | 0.3431c0.0807) | 0.3341c (0.0737) | 0.1820b (0.0739) | 0.3635c0.0603) | 0.3468c (0.0625) | 0.2252c (0.0666) | 0.1279 (0.0803) | |
| Time trend, 1980–2002 | 0.0003 (0.0237) | 0.0446 (0.0305) | 0.0266 (0.0280) | 0.0099 (0.0256) | −0.0146 (0.0231) | −0.0324 (0.0211) | −0.0351b (0.0174) | −0.0239 (0.0180) | −0.0330a (0.0191) | −0.0403a (0.0229) | |
| Varying policy start year | |||||||||||
| Year | Part-time vs. Full-time | Stay home vs. Full-time | |||||||||
| Start year dummy | Linear trend | Quadratic trend | Start year dummy | Linear trend | Quadratic trend | ||||||
| 1988 | 0.2521 (0.1815) | 0.0208 (0.0497) | 0.0049a (0.0025) | 0.2671 (0.1654) | 0.0311 (0.0458) | 0.0056bb (0.0024) | |||||
| 1989 | −0.0984 (0.1771) | 0.0419 (0.0509) | 0.0022 (0.0029) | 0.3880b (0.1612) | −0.0056 (0.0476) | 0.0078c (0.0028) | |||||
| 1990 | 0.0364 (0.1887) | 0.0389 (0.0521) | 0.0030 (0.0034) | 0.5322c (0.1668) | −0.0476 (0.0488) | 0.0109c (0.0033) | |||||
| 1991 | −0.0530 (0.2376) | 0.0590 (0.0629) | 0.0016 (0.0046) | 0.4255b (0.2044) | −0.0742 (0.0579) | 0.0128c (0.0043) | |||||
| 1992 | 0.0052 (0.2432) | 0.0611 (0.0760) | 0.0017 (0.0060) | 0.1637 (0.2156) | −0.0389 (0.0704) | 0.0109a (0.0056) | |||||
| 1993 = actual FMLA Year | 0.4163b (0.2069) | −0.0462 (0.0703) | 0.0106a (0.0058) | 0.2864 (0.1904) | −0.0699 (0.0665) | 0.0146c (0.0055) | |||||
| 1994 | 0.0858 (0.2254) | 0.0384 (0.1003) | 0.0039 (0.0096) | 0.0735 (0.2133) | −0.0182 (0.0958) | 0.0124 (0.0093) | |||||
| 1995 | 0.1832 (0.2302) | 0.0089 (0.1177) | 0.0073 (0.0127) | −0.1123 (0.2338) | 0.0757 (0.1178) | 0.0052 (0.0127) | |||||
| 1996 | 0.1757 (0.2395) | 0.0076 (0.1401) | 0.0084 (0.0174) | −0.3288 (0.2492) | 0.2347a (0.1423) | −0.0117 (0.0175) | |||||
| 1997 | 0.6857c (0.2616) | −0.2913a (0.1745) | 0.0493b (0.0250) | −0.1725 (0.2856) | 0.2627 (0.1838) | −0.0180 (0.0259) | |||||
| 1998 | 0.0059 (0.3131) | −0.0076 (0.2374) | 0.0211 (0.0396) | −0.1293 (0.3214) | 0.3496 (0.2425) | −0.0369 (0.0404) | |||||
Standard errors in parentheses
a
significant at 10%;
b
significant at 5%;
c
significant at 1%
Regressions include the same controls as those in model 1(c), Table 4