| After one session n (%) | After two sessions n (%) | After three sessions n (%) | After four sessions n (%) |
5 - 10 (n = 32) | 24 (75.0) | 25 (78.1) | 25 (78.1) | 25 (78.1) |
11 - 15 (n = 57) | 8 (14.0) | 40 (70.2) | 42 (73.7) | 42 (73.7) |
16 - 20 (n = 23) | 0 (0.0) | 8 (34.8) | 13 (56.5) | 14 (60.9) |
21 - 25 (n = 10) | 0 (0.0) | 0 (0.0) | 3 (30.0) | 3 (30.0) |