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. 2016 Sep 20;8(9):2918–2923. doi: 10.19082/2918

Table 1.

The effective factors on preterm labor

Factors n % p-value
Smoking 22 3 0.618
Having underlying disease 100 13 0.786
Infections during pregnancy 263 35.8 0.125
Receiving incomplete pregnancy care 80 10.9 0.677
Having a history of abortion 146 19.9 0.008
Having the history of prematurity 85 11.6 0.818
PROM 223 30.3 0.482
Unplanned pregnancy 133 18.1 0.208
Risky behavior 15 2 0.916
Having a history of multiple pregnancies 75 10.2 0.042
Oral diseases 92 12.5 0.217
Use of infertility drugs 38 5.2 0.182