Puberty timing associated with obesity and central obesity in Chinese Han girls

BMC Pediatrics

Table 3 Median Age at Tanner Stages for Pubic Hair Development by Demographics

	≥PH2 Median Age (95% CI)	P value	≥PH3 Median Age (95% CI)	P value	≥PH4 Median Age (95% CI)	P value	≥PH5 Median Age (95% CI)	P value
Overall	11.62(11.51,11.73)	–	12.70(12.61,12.80)	–	14.38(14.28,14.48)	–	16.92(16.78,17.06)	–
Place
Urban	11.53(11.38,11.68)		12.38(12.24,12.53)		13.98(13.84,14.12)		16.61(16.43,16.78)
Rural	11.70(11.55,11.85)	0.132	12.97(12.85,13.10)	< 0.001	14.71(14.57,14.86)	< 0.001	17.25(17.02,17.48)	< 0.001
WHtR
< 0.5	11.68(11.56,11.79)		12.76(12.66,12.86)		14.48(14.38,14.60)		16.98(16.84,17.13)
≥ 0.5	11.25(10.91,11.60)	0.008	12.30(12.00,12.60)	0.001	13.82(13.57,14.08)	< 0.001	16.55(16.15,16.94)	0.029
WC
< 90th	11.68(11.57,11.79)		12.77(12.67,12.87)		14.49(14.38,14.59)		16.98(16.84,17.13)
≥ 90th	9.83(8.37,11.30)	< 0.001	11.52(10.84,12.20)	< 0.001	13.63(13.31,13.94)	< 0.001	16.49(16.05,16.92)	0.028
BMI
Normal weight	11.76(11.64,11.87)		12.79(12.69,12.90)		14.48(14.37,14.59)		17.01(16.87,17.16)
Overweight	11.31(10.96,11.66)	0.021^a	12.49(12.16,12.82)	0.086^a	13.71(13.37,14.04)	< 0.001^a	16.03(15.59,16.47)	< 0.001^a
Obese	10.57(10.00,11.14)	< 0.001^b	11.93(11.54,12.31)	< 0.00^b	13.81(13.45,14.18)	0.003^b	16.29(15.52,17.06)	0.022^b
		0.021^c		0.031^c		0.631^c		0.535^c

Abbreviations: BMI Body mass index, CI Confidence interval, PH Pubic hair stage, WHtR Waist to height ratio, WC Waist circumference
^aP value of comparison between overweight and normal weight
^b P value of comparison between obesity and normal weight
^c P value of comparison between overweight and obesity

ISSN: 1471-2431