Table 2.

Regression analysis of AM and basic characteristics of girls (n = 724)

Variables	p value	β (95% CI)
Weight (kg)	< 0.01	− 0.01 (− 0.019, − 0.004)
Height (cm)	0.2	0.01 (− 0.005, 0.025)
WC (cm)	0.1	− 0.009 (− 0.019, 0.002)
BMI (kg/m2)	< 0.001	− 0.03 (− 0.06, − 0.018)
Mother's AM (year)	< 0.001	0.3 (− 0.0242, 0.381)
SES	< 0.05	0.1 (0.003, 0.322)

AM age at menarche, WC waist circumference, BMI body mass index; SES: socioeconomic status, CI confidence interval

Linear regression was performed; p < 0.05