From: Association between age at menarche and bone mineral density in postmenopausal women
Age at menarche (years) | Beta | SE | P value | 95% CI |
---|---|---|---|---|
Model 1 | ||||
 ≤ 12 | Reference | |||
 13–15 | − 0.020 | 0.014 | 0.160 | (− 0.046, 0.007) |
 ≥ 16 | − 0.083 | 0.018 | < 0.001 | (− 0.117, − 0.048) |
Model 2 | ||||
 ≤ 12 | Reference | |||
 13–15 | − 0.013 | 0.014 | 0.355 | (− 0.041, 0.015) |
 ≥ 16 | − 0.078 | 0.018 | < 0.001 | (− 0.113, − 0.042) |
Model 3 | ||||
 ≤ 12 | Reference | |||
 13–15 | − 0.014 | 0.014 | 0.322 | (− 0.041, 0.013) |
 ≥ 16 | − 0.065 | 0.016 | < 0.001 | (− 0.096, − 0.033) |