Table 6. Age and biological maturation-adjusted means±standard errors of boys and girls heights according to study year and region.

	1992		1999		2012
	Mean±SE		Mean±SE		Mean±SE		F	p-value	Pairwise comparisons
Urban
Boys	145.4±0.8		147.5±0.4		146.7±0.4		2.715	0.067	92 = 99 = 12
Girls	147.7±0.9		147.1±0.4		144.6±0.5		8.454	<0.001	92 = 99;92>12;99>12
Suburban
Boys	141.5±0.5		145.6±0.3		143.7±0.4		27.213	<0.001	92<99;92<12;99>12
Girls	142.8±0.5		147.1±0.3		143.6±0.4		37.645	<0.001	92<99;92 = 12;99>12