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Table 1 Risk factors for preterm birth of study population

From: Prediction of labour onset in women who present with symptoms of preterm labour using cervical length

Risk factor

N (%)

Previous mid-trimester miscarriage

2 (2.1)

Previous preterm delivery

24 (25.3)

Previous uterine evacuation

30 (31.6)

Previous cervical surgery

1 (1.1)

Genitourinary infections in current pregnancy

58 (61.1)

Periodontal disease

0 (0.0)

Inter-pregnancy interval < 6 months

2 (2.1)

Smoking

10 (10.5)

Alcohol consumption

4 (4.2)

Substance abuse

0 (0.0)