Table 2 The number and proportion of males within specific time interval from chronological and dental age (CA-DA)
Time intervals | Datasets | Chi-square test | ||
|---|---|---|---|---|
French-Canadian | UK Caucasian | Southern Chinese | ||
n (%) | n (%) | n (%) | p | |
3 months | 10 (13%) | 18 (15%) | 24 (19%) | 0.001* |
6 months | 21 (27%) | 42 (34%) | 57 (45%) | 0.022* |
9 months | 34 (44%) | 61 (49%) | 86 (68%) | 0.001* |
12 months | 44 (56%) | 74 (60%) | 101 (80%) | 0.001* |
18 months | 60 (77%) | 89 (72%) | 114 (90%) | 0.001* |
24 months | 71 (91%) | 106 (85%) | 124 (98%) | 0.001* |
30 months | 74 (95%) | 114 (92%) | 126 (100%) | 0.006* |
Total | 78 (100%) | 124 (100%) | 126 (100%) | – |