Table 2

Summary statistics for class of evidence assessment of studies included in this review

CAM typeCannabis (n=7)Diet (n=7)Exercise (n=10)Psychological approaches (n=9)Other (n=5)Total (n=38)
Adequate sample size4333316 (42.1%)
Follow-up rate of 80%+76108437 (97.4%)
Random sequence generation77108538 (100.0%)
Allocation concealment7700215 (39.5%)
Blind assessment of main outcomes7795333 (86.8%)
Equal intervention application66108436 (94.7%)
Intent-to-treat analysis4367020 (52.6%)
  • CAM, complementary alternative medicines.