| Crude | Adjusted | ||||
---|---|---|---|---|---|---|
OR(95%CI) | R2* | P value | OR (95%CI) | R2* | P value | |
Age group at thelarche (year) | Â | 0.006 | Â | Â | 0.095 | Â |
 Normal thelarche (11–13) | Ref. |  |  | Ref. |  |  |
 Early thelarche (≤ 10) | 1.48(1.04, 2.11) |  | 0.028 | 1.37(0.95, 1.99) |  | 0.094 |
 Late thelarche (≥ 14) | 1.63(0.63, 4.20) |  | 0.311 | 1.91(0.70, 5.26) |  | 0.209 |
Age group at menarche (year) | Â | 0.002 | Â | Â | 0.091 | Â |
 Normal menarche (12–15) | Ref. |  |  | Ref. |  |  |
 Early menarche (< 12) | 1.18(0.70, 2.00) |  | 0.531 | 1.23(0.71, 2.15) |  | 0.462 |
 Late menarche (≥ 16) | 0.67(0.31, 1.44) |  | 0.302 | 1.02(0.45, 2.31) |  | 0.964 |
Ever diagnosed with precocious puberty | Â | 0.003 | Â | Â | 0.094 | Â |
 No | Ref. |  |  | Ref. |  |  |
 Yes | 1.67(0.88, 3.17) |  | 0.114 | 1.86(0.93, 3.73) |  | 0.079 |
Regular menstrual cycle in the past 12 months | 0.026 | Â | Â | 0.110 | Â | Â |
 No | Ref. |  |  | Ref. |  |  |
 Yes | 0.41(0.28, 0.60) |  | 0.000 | 0.44(0.30, 0.65) |  | 0.000 |
Regular menstrual periods in the past 12 months | Â | 0.017 | Â | Â | 0.105 | Â |
 No | Ref. |  |  | Ref. |  |  |
 Yes | 0.51(0.36, 0.71) |  | 0.000 | 0.52(0.36, 0.74) |  | 0.000 |
Menstrual quantity in the past 12 months (amount of bleeding) | Â | 0.002 | Â | Â | 0.093 | Â |
 Little | Ref. |  |  | Ref. |  |  |
 Moderate | 0.89(0.60, 1.31) |  | 0.548 | 0.82(0.54, 1.24) |  | 0.338 |
 Heavy | 0.77(0.42, 1.42) |  | 0.403 | 0.62(0.33, 1.19) |  | 0.154 |
 Heavy with large clots | 0.59(0.22, 1.61) |  | 0.306 | 0.59(0.20, 1.71) |  | 0.330 |
Menstrual flow length in the past 12 months (Days) | Â | 0.000 | Â | Â | 0.091 | Â |
 < 3 | Ref. |  |  | Ref. |  |  |
 3–7 | 0.77(0.21, 2.84) |  | 0.697 | 0.71(0.18, 2.78) |  | 0.626 |
 > 7 | 0.83(0.19, 3.60) |  | 0.807 | 0.71 (0.15, 3.28) |  | 0.656 |