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Table 4 Median Age at Menarche by Demographics

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

 

Menarche

P value

Median Age (95% CI)

Overall

12.36(12.27,12.45)

–

Place

 Urban

12.17(12.04,12.30)

 

 Rural

12.52(12.40,12.65)

< 0.001

WHtR

 < 0.5

12.47(12.38,12.57)

 

 ≥ 0.5

11.70(11.43,11.97)

< 0.001

WC

 < 90th

12.44(12.35,12.54)

 

 ≥ 90th

11.48(11.04,11.93)

< 0.001

BMI

 Normal weight

12.51(12.42,12.61)

 

 Overweight

11.75(11.50,12.00)

< 0.001a

 Obese

11.44(11.04,11.84)

< 0.001b

  

0.175c

  1. Abbreviations: BMI Body mass index, CI confidence interval, WHtR Waist to height ratio, WC Waist circumference
  2. a P value of comparison between overweight and normal weight
  3. b P value of comparison between obesity and normal weight
  4. c P value of comparison between overweight and obesity
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BMC Pediatrics

ISSN: 1471-2431

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