Table 3. Correlation analysis of BMI category and socioeconomic variables by school location.

Socioeconomic variables	School locations
	Rural (n = 1846)		Urban (n = 1942)
	r	P-value	r	P-value
Gender	-0.033	0.028	-0.067	0.002
Household size	NA	0.145	-0.086	<0.001
Mother’s occupational level	NA	0.089	0.091	0.03
Father’s occupational level	NA	0.273	0.066	0.012
Mother’s educational level	NA	0.171	0.084	0.028
Father’s educational level	NA	0.101	0.091	<0.001
Household income level	0.104	0.002	0.122	<0.001
SES level	0.106	0.026	0.089	<0.001

Data are Spearman’s rank correlations coefficients (r); NA: No association found between variables.