| Number of Patients | Difference in Questionnaire Scores | P1 | P2 | P3 | P4 | P5 |
Group 1 (FREQ = 0) | 47 | 3.93 ± 3.75 | -- | 0.0005 | 0.0003 | 0.0002 | 0.0001 |
Group 2 (FREQ = 1) | 63 | 15.71 ± 7.51 | 0.0005 | -- | 0.0005 | 0.0002 | 0.0001 |
Group 3 (FREQ = 2) | 35 | 25.46 ± 10.44 | 0.0003 | 0.0005 | -- | 0.487 | 0.0001 |
Group 4 (FREQ = 3) | 18 | 27.22 ± 12.39 | 0.0002 | 0.0002 | 0.487 | -- | 0.04 |
Group 5 (FREQ = 4) | 19 | 35.52 ± 13.01 | 0.0001 | 0.0001 | 0.0001 | 0.04 | -- |