Table 2. Type of intervention of all RCTs conducted in Japan (N = 1,013).
| Type of intervention | Number | Percent |
| Drug | 505 | 49.9% |
| Physical therapy | 106 | 10.5% |
| Device | 86 | 8.5% |
| Procedure/Surgery | 78 | 7.7% |
| Biological/Vaccine | 76 | 7.5% |
| Others | 162 | 16.0% |
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