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Table 3 Maternal background characteristics as risk factors for dystocia in nulliparous women with and without experience of history of violence, as shown by crude odds ratios (OR) and 95% confidence intervals.

From: A multi-centre cohort study shows no association between experienced violence and labour dystocia in nulliparous women at term

Characteristics History of violence
(n = 940)
No history of violence
(n = 1712)
  Total cases of dystocia
(n = 337)
Total cases of dystocia
(n = 648)
  Dystocia/no dystocia OR 95% CI Dystocia/no dystocia OR 95% CI
Age > 24 years 279/449 1.64 (1.16-2.30) 574/905 1.36 (1.02-1.83)
Non-Danish 21/44 0.84 (0.49-1.44) 58/77 1.26 (0.88-1.80)
Not cohabiting 4/7 1.02 (0.29-3.52) 1/4 0.41 (0.05-3.64)
Low educational status (≤10 years) 85/149 1.00 (0.74-1.38) 84/176 0.76 (0.57-1.00)
Unemployed 120/183 1.23 (0.93-1.63) 154/279 0.89 (0.71-1.12)
Smoking 118/202 1.06 (0.80-1.41) 122/203 0.98 (0.77-1.26)
Alcohol consumption 100/139 1.45 (1.07-1.96) 144/254 0.93 (0.74-1.18)
Overweight > 25 BMI 80/117 1.26 (0.91-1.75) 156/210 1.26 (0.99-1.60)