RE | Control group (%) | experimental group (%) | Z | P |
No | 9 (15.00%) | 17 (29.82%) |
|
|
Level 1 Level 2 Level 3 Level 4 Occurance rate | 23 (38.33%) 26 (43.33%) 2 (3.33%) 0 30 (76.92%) | 22 (38.60%) 17 (29.82%) 1 (1.75%) 0 40 (70.18%) | −2.018 | 0.037 |