Time | Group-A | Group-B | Group-C | Group-D | P-value |
1 min. | 7 (23%) | 6 (20%) | 6 (20%) | 4 (15%) | 0.13 |
2 min. | 26 (85%) | 19 (62%) | 12 (40%) | 9 (30) | 0.05* |
3 min. | 26 (85%) | 19 (62%) | 13 (42%) | 7 (25%) | 0.05* |
4 min. | 24 (80%) | 20 (65%) | 11 (36%) | 6 (20%) | 0.05* |
5 min. | 22 (75%) | 6 (20%) | 16 (54%) | 22 (75%) | 0.05* |