Table 1 Comparison between peroperative characteristics of the two studied groups

 • Male

14

66.7

13

61.9

χ²=

0.104

0.747

 • Female

7

33.3

8

38.1

Age (years)

Group A (n = 21)

Group B (n = 21)

 • Min.– Max.

0.83–14.0

3.67–14.0

t = 

1.206

0.235

 • Mean ± SD.

10.21 ± 3.39

9.0 ± 3.09

PVR risk factors

Group A (n = 21)

Group B (n = 21)

No.

%

No.

%

χ²

p

 • Multiple breaks

5

23.8

3

16.7

0.303

^FEp=0.702

 • Large or GRT

10

47.6

4

22.2

2.717

0.099

 • Vitreous hemorrhage

5

23.8

5

27.8

0.080

^FEp=1.000

 • Choroidal hemorrhage

4

19.0

1

5.6

1.579

^FEp=0.349

 • Extensive RD

18

85.7

14

77.8

0.415

^FEp=0.682

Duration of RD (months)

Group A (n = 16)

Group B (n = 16)

U

p

 • Min.– Max.

0.50–7.0

0.25–5.0

101.5

0.323

 • Mean ± SD.

2.56 ± 1.96

1.85 ± 1.36

Duration of surgery (min.)

Group A (n = 21)

Group B (n = 21)

U

p

 • Min.– Max.

30.0–90.0

30.0–80.0

176.0

0.260

 • Mean ± SD.

64.05 ± 18.68

57.14 ± 18.0