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Table 2 Univariable and multivariable logistic regression analyses for prediction of non-participation in the routine malformation scan by maternal characteristics

From: Reasons for non-participation in malformation scans in Denmark: a cohort study

  Univariable (n = 153) Multivariable (n = 153)
Variable OR (95% CI) p-value OR (95% CI) p-value
Agea
 15–19 4.65 (2.28–9.46) < 0.05 3.51 (1.58–7.81) 0.002
 20–24 2.13 (1.46–3.10) < 0.05 1.70 (1.12–2.57) 0.012
 25–39 1.00   1.00  
 40–44 0.62 (0.15–2.53) 0.510 0.71 (0.17–2.90) 0.630
Smokingstatus
 No 1.00   1.00  
 Yes 1.76 (1.14–2.73) <  0.05 1.53 (0.97–2.41) 0.069
Parity
 Nulliparous 1.00   1.00  
 Multiparous 0.65 (0.03–0.04) 0.009 0.79 (0.55–1.12) 0.180
BMI
  < 18.5 1.61 (0.82–3.13) 0.160 1.31 (0.66–2.59) 0.437
 18.5–24.99 1.00   1.00  
  ≥ 25.00 0.77 (0.49–1.20) 0.240 0.78 (0.50–1.21) 0.270
  ≥ 30.00 1.11 (0.70–1.76) 0.653 1.09 (0.38–1.72) 0.729
  1. OR odds ratio, CI confidence interval, BMI body mass index; aage groups were generated using a cubic spline (Additional file 1)