Duration | Frequency (n) | Percentage Frequency (%) |
Less than 1 month | 4 | 4.8 |
1 - 6 months | 37 | 44.6 |
7 - 12 months | 14 | 16.9 |
13 - 18 months | 11 | 13.3 |
19 - 24 months | 10 | 12.0 |
More than 24 months | 7 | 8.4 |
Total | 83 | 100.0 |