Table 1 Types of control by study conclusion in acupuncture clinical trials.
Type of control | No. of studies | Study conclusions | Â | Â |
|---|---|---|---|---|
| Â | Â | Positive | Negative | Inconclusive |
| Â | Â | n (%) | n (%) | n (%) |
Nontreatment | 51 | 43 (84.3) | 6 (11.8) | 2 (3.9) |
Noninsertion | 30 | 16 (53.3) | 13 (43.3) | 1 (3.3) |
sham control | Â | Â | Â | Â |
Insertion sham control | 37 | 14 (37.8) | 20 (54.1) | 3 (8.1) |
Positive comparison | 46 | 26 (56.5) | 16 (34.8) | 4 (8.7) |
Combined controls | 2 | 2 (100) | 0 (0) | 0 (0) |
Total | 166 | 101 (60.8) | 55 (33.1) | 10 (6) |