Table 1

Anthropometric and clinical features of girls according to tertiles of age
Variable Age in years (tertile) p
<12.04 (77) 12.04-14.05 (80) >14.05 (77)
Age (years) 10.9 ± 1.1a 13.0 ± 0.6a 15.2 ± 1.1a <0.001
*Height percentile 66.21 (39.99-82.14) 55.65 (31.45-74.40) 41.87 (19.75-77.13) 0.066
*BMI percentile 62.9 (31.8-86.4) 59.9 (35.1-85.1) 61.8 (31.7-82.1) 0.967
Age at thelarche (years) 9.9 ± 1.0a 10.3 ± 1.1 10.5 ± 1.2a 0.013
Age at menarche (years) 10.9 ± 1.2a 11.6 ± 1.0b 12.1 ± 1.3ab 0.002
25(OH)D (ng/mL) 20.77 ± 6.97 22.10 ± 6.01 21.09 ± 7.33 0.492

Values are expressed as mean ± SD or median and interquartile range (25-75%).

p value by one-way analysis of variance (ANOVA).

* Log10 transformation.

Equal letters mean statistical difference between groups.

Santos et al.

Santos et al. BMC Pediatrics 2012 12:62   doi:10.1186/1471-2431-12-62

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