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Table 3 Background characteristics

From: Experiences of interactive ultrasound examination among women at risk of preterm birth: a qualitative study

  Mean Range Median
Age (years) 28 22–31 28.5
Gestational weeks at 3/4D ultrasound examination 30 + 2 28 + 0–32 + 3 30 + 2.5
Ward time (days) 10 2–21 4
Gestational weeks at birth 36 + 3 31 + 6–39 + 3, 37 + 3