Table 1. Demographic characteristics of the patien.

Parameter	Study Group N (%)	control Group N (%)	Statistical Indicators
Age (years)
<20	4(33.3)	0(0)	χ2 = 6.0 P = 0.05 df = 2
20-30	2(16.6)	6(50)
>30	6(50)	6(50)
gravidity
1	7(58.3)	5(41.6)	χ2 = 0.6 P = 0.7 df = 2
2	2(16.6)	3(25)
> 2	3(25)	4(33.3)
Number of parity
0	7(58.3)	9(75)	χ2 = 1.25 P = 0.5 df = 2
1	3(25)	1(8.3)
>2	2(16.6)	2(16.6)
Gestational age (weeks)
28-30	4(33.3)	6(50)	χ2= 0.71 P = 0.7 df = 2
30-32	5(41.6)	4(33.3)
32-34	3(25)	2(16.6)
Length of rupture (hours)
1-12	9(75)	10(83.3)	χ2 = 5.05 P = 0.8 df = 2
12-24	0(0)	2(16.6)
24-48	3(25)	0(0)