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. 2020 Jul 3;9(7):2101. doi: 10.3390/jcm9072101

Table 3.

Continuation rates and reasons for discontinuation.

Discontinuation Due to
Authors & Year Continuation Rate Expulsion Pain Unacceptable Bleeding Pregnancy Wish/Personal reasons Other
Pakarinen et al. 1996 [41] 86.9% at 1st year
Suhonen et al. 2004 [45] 79.8% at 1st year 1.1% 6.4% 2.1% 4.2% Hormonal: 4.2%
Other medical: 2.1%
Wildemeersch et al. 2005 [51] 90.2% at 1st year 1.1% 2.2% 2.2% 3.2% Other: 1.1%
Bahamondes et al. 2011 [32] 92.0% at 1st year 3.7% 1.5% 2.4% Other medical: 0.8%
Lost to follow-up: 1.6%
Marions et al. 2011 [39] 73.1% at 1st year 3.0% 11.9% 10.4% Infection/cyst: 1.5%
Armitage et al. 2013 [31] 77.3% at 1st year 2.1% 4.1% 2.1% Lost to follow up: 10.3%
Others: 4.1%
Savasi et al. 2014 [43] 92.6%-different observation time 1.9% 1.9% 5.6%
Zhao et al. 2014 [52] 90.0% at 1st year
Abraham et al. 2015 [30] Younger than 20: 81.0% at 1st year
67.0% at 2nd year
20–25 years old: 87.0% at 1st year
79.0% at 2nd year
Older than 25: 87.0% at 1st year
77.0% at 2nd year
Kaislasuo et al. 2015 [37] 73.0% at 1st year 2.7% 1.8% Other: 6.3%
Lost to follow-up: 16.2%
Gemzell-Danielsson et al. 2015 [35] LNG-IUS 8: 78.8% at 1st year
54.3% at 2nd year
LNG-IUS 13:
79.8% at 1st year
58.1% at 2nd year
Hall et al. 2016 [36] 93.1% at 1st year 1.4% Side effects: 4.2%
Lack of benefit: 1.4%
Wildemeersch et al. 2017 [49] 53.8% at 5th year 0% 6.0% 29.9% Other medical: 6.8%
Lost to follow up: 2.6%
Pregnancy: 0.9%
Vaitsiakhovich et al. 2018 [48] In RCT:
74.0% at 1st year
70.0% at 2nd year
Teunissen et al. 2019 [47] 76.8% at 1st year
63.6% at 2nd year
50.4% at 3rd year
37.5% at 4th year
11.1% at 5th year

Abbreviations: LNG-IUS: levonorgestrel-releasing intrauterine system; RCT: randomized controlled trial.