Table 1. Demographic data of both groups of women (expectant women and women with spontaneous abortion) .

Variables		Cases (Spontaneous abortion) n=160	Controls (Pregnant woman) n=160	p
Mean±SD age (year)		(30.9 ±7.3)	(27.74 ± 5.41)
	<25	41(25.6%)	59(36.9%)	0.3
	25-35	74(46.2%)	85(53.1%)
	>35	45(28.1%)	16(10.0%)
Education	Illiterate	8(5%)	10(6.2%)	0.47
	Less than high school diploma	129(80.6%)	120(75%)
	Academic education	23(14.4%)	30(18.8%)
Education Spouse	Illiterate	2(1.2%)	1(0.6%)	0.37
	Less than high school diploma	125(78.1%)	116(72.5%)
	Academic education	33(20.6%)	43(26.9%)
Occupation	Housekeeper	148(92.5%)	149 (93.1%)	0.82
	Employee	12 (7.5%)	11(6.9%)
Occupation Spouse	Free	124(77.5%)	95(59.4%)	0.2
	Employee	36(22.5%)	65(40.6%)
Number of children	<=1	58(36.2%)	84(52.5%)	0.003
	>=2	102(63.8%)	76(47.5%)
Smoking		1 (0.6%)	1 (0.6%)	0.99
History of Vaginal infection		28 (17.5%)	26 (16.2%)	0.76
History of urinary infection		16(10%)	25(15.6%)	0.13
History of urinary infection and Spouse		5(3.1%)	5(3.1%)	0.99
Location	City	48(30%)	46(28.8%)	0.80
	Village	112(70%)	114(71.2%)
Coombs Wright		27(16.9%)	33(20.6%)	0.39