Table 3 Multivariate binary logistic regression analysis of risk factors for CPSP at 6 months (M6).

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
Surgical group
 Ear 1    
 Paranasal sinus 2.502 0.324 9.335 0.379
 Nose 0.292 0.022 3.851 0.350
 Oral cavity 0.000 0.000   0.999
 Larynx 0.000 0.000   0.998
 Pharynx 1.061 0.145 7.744 0.954
 Esophagus 0.000 0.000   0.999
 Salivary glands 1.672 0.173 16.147 0.657
 Neck and skin 1.054 0.108 10.252 0.964
 Thyroid 31.202 1.498 650.055 0.026
ASA status 4.032 1.453 11.189 0.007
Chronic pain before surgery     0.340
 No 1   
 Yes 1.859 0.520 6.650
Minimal pain (NRS) at D1 1.721 1.189 2.492 0.004
  1. NRS = numeric rating scale.
  2. Bold values are statistically significant for p < 0.05.