Table 5.

Incidence of preterm and term delivery in group II and group III

Incidence	Preterm		Term		Total		Odds ratio (preterm/term)	95% CI
	Count	%	Count	%	Count	%
Group
II	19	31.7	9	15.0	28	46.7	1.974	1.148, 3.395
III	11	18.3	21	35.0	32	53.3	0.490	0.270, 0.887
Total	30	50.0	36	650	60	100	4.030	1.372, 11.83

χ² = 6.696; P = 0.010 sig