Intrathecal morphine administration reduces postoperative pain and peripheral endocannabinoid levels in total knee arthroplasty patients: a randomized clinical trial

Table 1 Demographics of subjects selected for the study (Mean ± S.E)

	Placebo	Morphine
Number of Subjects	25	17
Gender (M/F)	6/19	8/9
Age	66.2 ± 1.8	64.0 ± 2.1
BMI (kg/m²)	32.2 ± 1.1	31.2 ± 1.3
History of Mood Disorders (Depression and/or Anxiety)	8	7
Preoperative Opioid Use	5	1

ISSN: 1471-2253