| Marriage risk (until age 27.4) | Marriage risk | ||
| Logit regression results | Proportional hazard Cox model | ||
| Birth Month | Birth Month | ||
| January | Ref. Cat. | January | Ref. Cat§ |
| February | 0.39 | February | 0.04 |
| March | 0.44* | March | 0.26 |
| April | 0.27* | April | −0.11 |
| May | 0.68** | May | 0.04 |
| June | 0.53 | June | −0.38 |
| July | 0.42 | July | 0.14 |
| August | 0.38 | August | 0.04 |
| September | 0.49 | September | −0.10 |
| October | 0.21 | October | −0.09 |
| November | 0.21 | November | −0.17 |
| December | −0.07 | December | −0.16 |
| Edu. Attainment | −0.078*** | ||