Variables | SD | Detectable mean difference | Calculated sample size | After considering 20% drop out |
Total knowledge score | 8.48 | 4 | 72 for each group Total = 144 | 173 |
Total attitude score | 10.96 | 5 | 76 for each group Total = 152 | 182 |
Total practice score | 13.31 | 6 | 78 for each group Total = 156 | 188 |