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Table 2 Baseline characteristics in association with precocious puberty

From: Association between MKRN3 and LIN28B polymorphisms and precocious puberty

  Girls (n = 103) Boys (n = 70)
Prepuberty Precocious puberty P value Prepuberty Precocious puberty P value
Age, n (%)a    0.006    < 0.0001
 7 years 61 (89.7) 7 (10.3)   11 (47.8) 12 (52.2)  
 8 years 35 (100.0) 0 (0)   14 (50.0) 14 (50.0)  
 9 years     19 (100.0) 0 (0)  
BMI (kg/m2)b 15.3 (14.7, 17.1) 16.0 (15.1, 19.1) 0.237 16.1 (15.2, 19.6) 15.8 (14.6, 18.2) 0.229
BMI z scoreb −0.36 (−0.65, 0.48) −0.07 (− 0.49, 1.37) 0.237 −0.33 (− 0.66, 0.97) −0.42 (− 0.88, 0.52) 0.308
Weight (kg)b 24.3 (22.2, 27.6) 26.7 (25.8, 30.9) 0.057 27.5 (24.2, 35.1) 25.9 (22.7, 31.6) 0.073
Height (cm) 124.7 (6.2) 127.6 (3.4) 0.217 130.8 (8.5) 128.6 (6.4) 0.273
Height SDS −0.03 (1.0) 0.45 (0.6) 0.217 0.10 (1.1) −0.17 (0.8) 0.273
Tanner stagea
 I 96 (93.2)    44 (62.9)   
 II   7 (6.8)    21 (30.0)  
 III   0 (0.0)    5 (7.1)  
Testes       < 0.0001
 I     44 (74.6) 15 (25.4)  
 II     0 (0) 10 (100.0)  
 III     0 (0) 1 (100.0)  
  1. Abbreviation: BMI body mass index, SDS standard deviation score
  2. aThe variables are given in mean (standard deviation)
  3. bData shown in median (interquartile range)