What do systematic reviews say?

High feedback vs low feedback of routine prenatal ultrasound

High feedback may leads to higher cessation of smoking compared with low feedback of routine prenatal ultrasound (low certainty).

• High feedback versus low feedback of prenatal ultrasound for reducing maternal anxiety and improving maternal health… 2015 · Cochrane Headline outcomes only
  RR 2.93 [1.25, 6.86]
  1 study · 129 participants
  Low