From: Age at menarche and performance intelligence quotients of adolescents in Bangkok, Thailand: a cross-sectional study
IQ
Intercept
Coefficient
Standard error
95 % CI
p-value
Age at menarche (years)
119.18
−1.067
0.310
−1.67, −0.459
0.027*
BMI (kg/m2)
−0.297
0.108
−0.509, −0.085
0.023*
Maternal age at birth (years)
0.326
0.081
0.167, 0.486
0.005*