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Table 1 Clinical features of 6- to 8-year-old girls with IPT and CPP

From: Differential diagnosis of precocious puberty in girls during the COVID-19 pandemic: a pilot study

Items

IPT(n = 40)

CPP(n = 20)

Statistcs

P values

CA (years)

7.50 (6.42,7.79)

7.38(7.27,7.81)

Z=-0.998

0.318

MPH (cm)

160.55 ± 3.98

160.38 ± 3.84

t = 0.163

0.871

Birth weight (kg)

3242.63 ± 404.36

3268.42 ± 500.89

t=-0.212

0.833

Age at maternal menarche (years)

12.68 ± 1.11

12.76 ± 1.16

t=-0.281

0.780

Age at onset (years)

7.00 (6.12,7.42)

7.33 (6.92,7.67)

Z=-2.098

0.036*

Height (cm)

127.06 ± 6.90

128.35 ± 3.08

t=-1.000

0.321

Height Z score

0.68 ± 1.05

0.58 ± 0.67

t = 0.730

0.469

Height Z score – MPH Z score

0.68 ± 0.86

0.53 ± 0.88

t = 0.610

0.544

Weight (kg)

27.18 ± 5.85

26.41 ± 2.94

t = 0.554

0.582

Weight Z score

0.95 ± 1.29

0.58 ± 0.67

t = 1.448

0.153

BMI

16.72 ± 2.63

16.01 ± 1.56

t = 1.116

0.269

BMI Z score

0.81 ± 1.30

0.46 ± 0.79

t = 1.124

0.266

Overweight/obesity (%)

32.5

10

χ2 = 4.030

0.045*

LH

0.11 (0.00,0.27)

0.50 (0.24,0.82)

Z=-3.716

0.000*

E2 (pmol/L)

12.09 (0.00,47.67)

54.51 (0.00,115.13)

Z=-1.782

0.075

Uterine length

3.43 ± 0.57

3.61 ± 0.44

t=-1.172

0.247

Uterine volume

1.20 (0.84,1.84)

1.74 (1.34, 2.69)

Z=-2.358

0.018*

Follicle number (d > 4 mm)

3.00 (1.00,5.00)

5.00 (4.00,6.00)

Z=-2.407

0.016*

BA

7.84 ± 1.41

8.65 ± 0.76

t=-2.893

0.005*

BA-CA(years)

0.69 ± 1.01

1.20 ± 0.76

t=-2.006

0.050

PAH Z score

-0.01 ± 1.00

-0.65 ± 0.66

t = 2.582

0.012*

PAH Z score – MPH Z score

0.01 ± 1.19

0.62 ± 0.94

t=-2.032

0.047*

  1. * P < 0.05
  2. CA, chronological age; MPH, mid-parental height; BMI, body mass index; BA, bone age; PAH, predicted adult height