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Table 4 Factors associated with severe pain during the LNG-IUS insertion

From: Use of naproxen versus intracervical block for pain control during the 52-mg levonorgestrel-releasing intrauterine system insertion in young women: a multivariate analysis of a randomized controlled trial

Variables Crude OR (95% CI)* p-value Adjusted OR (95% CI)** p-value
Constant    3.190 (0.964; 13.713) 0.078
Pain relief method     
 Block
 Naproxen 2.511 (1.125; 5.755) 0.026 3.671 (1.488; 9.652) 0.006
Ethnicity     
 White skin
 Skin of colour 0.331 (0.087; 1.023) 0.079 0.243 (0.054; 0.864) 0.041
Education     
 < high school graduation
 High school graduation or equivalent 0.889 (0.142; 5.912) 0.899
 ≥ College graduation 2.022 (0.418; 10.855) 0.378
Attending physician     
 Resident
 Gynecologist 0.881 (0.291; 2.723) 0.822
Parity     
 Nulliparous
 Non-nulliparous 0.099 (0.015; 0.392) 0.004 0.068 (0.009; 0.300) 0.002
Uterine sounding (every 1-cm increase) 0.502 (0.272; 0.882) 0.021
Dysmenorrhea     
 Yes
 No 0.903 (0.400; 2.023) 0.805
  1. CI Confidence interval, OR odds ratio, Hosmer–Lemeshow p = 0.957
  2. *Crude OR refers to simple logistic regression; **adjusted OR refers to multiple logistic regression