Level | Pre-evaluation | Post-evaluation | ||||||
Control | Experimental | Control | Experimental | |||||
N | % | N | % | N | % | N | % | |
None | 33 | 50 | 19 | 43 | 26 | 40 | 18 | 41 |
Moderate | 25 | 38 | 14 | 32 | 31 | 47 | 2.3 | 52 |
Severe | 8 | 12 | 11 | 25 | 7 | 13 | 3 | 7 |