Group | Case | Baseline | 2weeks | 4 weeks | 8 weeks | 12 weekends | χ2 | P |
---|---|---|---|---|---|---|---|---|
late-type group | 23 | 0 | 8 (34.78%) | 9 (39.13%) | 15 (65.22%) | 19 (82.61%) | 14.211 | 0.003 |
middle-type group | 87 | 0 | 15 (17.24%) | 22 (25.29%) | 55 (63.22%) | 69 (79.31%) | 93.152 | < 0.001 |
early-type group | 44 | 0 | 6 (13.64%) | 11 (25%) | 27 (61.36%) | 34 (77.27%) | 47.983 | < 0.001 |
 |  |  | χ2 = 4749 P = 0.093 | χ2 = 1.918 P = 0.383 | χ2 = 0.101 P = 0.951 | χ2 = 0.262 P = 0.877 |  |  |