What do systematic reviews say?

Intervention not reported

It is very uncertain whether the intervention changes PTB (< 37 w) ‐ Repeat cones versus No Treatment (very low certainty).

• Obstetric outcomes after conservative treatment for cervical intraepithelial lesions and early invasive disease 2017 · Cochrane Headline outcomes only
  RR 3.78 [2.65, 5.39]
  11 studies · 1317284 participants
  Very low