Age at menarche and performance intelligence quotients of adolescents in Bangkok, Thailand: a cross-sectional study

Table 2 Stepwise multiple regression analysis of the best-fit model

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*

ISSN: 1471-2431