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Table 3 The number and proportion of females within specific time interval from chronological and dental age (CA-DA)

From: Dental age estimation in southern Chinese population using panoramic radiographs: validation of three population specific reference datasets

Time
intervals
Datasets Chi-square
test
French-Canadian UK Caucasian Southern Chinese
  n (%) n (%) n (%) p
3 months 19 (24%) 27 (21%) 35 (27%) 0.505
6 months 31 (39%) 49 (38%) 58 (45%) 0.480
9 months 46 (58%) 59 (46%) 83 (65%) 0.009*
12 months 56 (71%) 75 (59%) 102 (80%) 0.001*
18 months 68 (86%) 99 (77%) 117 (91%) 0.007*
24 months 74 (94%) 113 (88%) 126 (98%) 0.005*
30 months 78 (99%) 116 (91%) 128 (100%) 0.001*
Total 79 (100%) 128 (100%) 128 (100%)
  1. *statistically significant value, p < 0.05