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. Author manuscript; available in PMC: 2021 Aug 1.
Published in final edited form as: Am J Obstet Gynecol. 2020 Mar 3;223(2):177–188. doi: 10.1016/j.ajog.2020.02.045

Table 3.

Adjusted Risk Ratio (95% CI)* for IUD Expulsion among Postpartum Women by Placement Timing

Placement Timing Complete Expulsions
aRR (95% CI)*
Interval Timing§ 1.00 (Ref)
Early or Immediate Timing# 4.49 (2.22 – 9.09)
Early Timing§ 5.27 (2.56 – 10.85)
 Early Inpatient 9.51 (0.63–19.52)
 Early Outpatient n/a
Immediate Timing§ 8.33 (4.32 – 16.08)

Abbreviations: aRR = adjusted risk ratios; CI= confidence interval; n/a=not applicable

*

Adjusted for IUD type, delivery type, placement timing, study region, study quality and length of follow-up

Among women with IUDs placed with any follow-up from 48 studies

§

Immediate = within 10 minutes of placental delivery; Early = more than 10 minutes to <4 weeks postpartum; Interval = ≥4 weeks postpartum

#

Studies did not classify IUD placements between early and immediate timing