| Cohorts | Female | Male | ||
| Frequency | Percentage | Frequency | Percentage | |
| All (n = 909) | 750 | 82.51% | 159 | 17.49% |
| Less than 3 years (n = 479) | 384 | 80.17% | 95 | 19.83% |
| 3 to 5 years (n = 164) | 136 | 82.93% | 28 | 17.07% |
| 5 to 10 years (n = 177) | 156 | 88.14% | 21 | 11.86% |
| More than 10 years (n = 89) | 74 | 83.15% | 15 | 16.85% |