Table 1 Univariate analysis results

Age (years), M (P25, P75)

3.0 (2.0, 4.4)

2.3 (1.8, 3.5)

4.2 (3.2, 8.2)

-6.33

<0.001

Length of the reconstructed urethra (cm), M (P25, P75)

4.5 (3.5, 5.1)

4.0 (3.2, 4.7)

5.2 (4.6, 6.2)

-8.36

<0.001

Glans width (mm), M (P25, P75)

14.0 (13.0, 16.0)

14.0 (13.0, 16.0)

14.0 (12.0, 15.0)

-1.89

0.059

BMI (kg/m²), M (P25, P75)

15.9 (14.9, 17.1)

15.9 (14.9, 16.8)

15.9 (14.9, 17.6)

-0.69

0.489

Follow-up time (months), M (P25, P75)

10.0 (8.0, 14.0)

10.0 (8.0, 14.0)

10.0 (8.0, 12.0)

-1.11

0.269

Degree of penile curvature, n (%)

 Moderate (30–45°)

67

51 (76.1)

16 (23.9)

3.87

0.049

 Severe (> 45°)

169

106 (62.7)

63 (37.3)

Surgical method, n (%)

 Duckett

124

86 (69.4)

38 (30.6)

1.02

0.601

 Duckett + Duplay

62

40 (64.5)

22 (35.5)

 Modified Koyanagi

50

31 (62.0)

19 (38.0)

Preoperative androgen use, n (%)

 No

169

111 (65.7)

58 (34.3)

0.19

0.662

 Yes

67

46 (68.7)

21 (31.3)

Suture type, n (%)

 Monofilament

143

98 (68.5)

45 (31.5)

0.66

0.418

 Multifilament

93

59 (63.4)

34 (36.6)

PH with prostatic utricle, n (%)

 No

162

116 (71.6)

46 (28.4)

5.99

0.014

 Yes

74

41 (55.4)

33 (44.6)

Season of surgery, n (%)

 Spring

65

48 (73.8)

17 (26.2)

6.59

0.086

 Summer

55

29 (52.7)

26 (47.3)

 Autumn

83

57 (68.7)

26 (31.3)

 Winter

33

23 (69.7)

10 (30.3)

Anesthesia mode, n (%)

 General anesthesia + sacral anesthesia

173

116 (67.1)

57 (32.9)

3.08

0.215

 General anesthesia + epidural anesthesia

48

34 (70.8)

14 (29.2)

 General anesthesia + penile nerve block

15

7 (46.7)

8 (53.3)

Low birth weight, n (%)

 No

163

111 (68.1)

52 (31.9)

0.59

0.444

 Yes

73

46 (63.0)

27 (37.0)

Preterm infants, n (%)

 No

161

108 (67.1)

53 (32.9)

0.07

0.791

 Yes

75

49 (65.3)

26 (34.7)