Table 4 Multivariate binary logistic regression analysis of risk factors for CPSP at 12 months (M12).

From: A prospective cohort register-based study of chronic postsurgical pain and long-term use of pain medication after otorhinolaryngological surgery

Parameter OR Lower 95% CI Upper 95% CI p
Model 1
Chronic pain before surgery 1.484 0.411 5.352 0.547
 Yes
 No
Minimal pain (NRS) at D1 1.361 0.959 1.933 0.085
Minimal pain (NRS) at M6 2.889 1.669 5.000 < 0.001
Model 2
Chronic pain before surgery 1.489 0.406 5.465 0.548
 Yes
 No
Minimal pain (NRS) at D1 1.443 1.008 2.064 0.045
Maximal pain (NRS) at M6 1.665 1.340 2.069 < 0.001
  1. NRS = numeric rating scale.
  2. Bold values are statistically significant for p < 0.05.