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. 2009 Sep-Dec;13(3):145–149. doi: 10.4103/0972-124X.60227

Table 4.

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

Incidence Preterm Term Total Odds ratio (preterm/term) 95% CI
Count % Count % Count %
Group
 I 5 8.3 25 41.7 24 40 300 0.134, 0.674
 II 19 31.7 11 18.3 36 60 2.59 1.520, 4.417
Total 24 40.0 36 60 60 100 0.116 0.034, 0.0390

χ2 = 13.611; P = 0.001 sig