Therapeutic role of nifedipine in threatened preterm labor: Current evidence and future perspectives.

32 The rate of preterm birth was 11.4% (5/44) in a nifedipine group compared with 19.0% (8/42) in a placebo group, a difference that did not reach statistical significance but suggested a trend toward reduced preterm birth with nifedipine. 32 Notably, a stratified analysis limited to multiparous women demonstrated a significant reduction in the number of preterm births in the nifedipine group.

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