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Table 3 Background data

From: Combined analysis of circulating β-endorphin with gene polymorphisms in OPRM1, CACNAD2 and ABCB1 reveals correlation with pain, opioid sensitivity and opioid-related side effects

  Patients Controls
  n=80 n=56
High responder 16  
Normal responder 44  
Non-responder 20  
Sex M/F 39/41 25/31
Mean age (range) 46.2 (25-66) 40.5 (27-61)
  1. Background data of the patients and controls participating in the study.