Table 1.
Number and percent of studies by funding source and regional setting (n = 400)
| Number | % | |
|---|---|---|
| Funding | ||
| National Institutes of Health (US) | 99 | 24.5% |
| National Institute of Mental Health | 53 | 13.3% |
| National Institute on Drug Abuse | 21 | 5.3% |
| National Cancer Institute | 14 | 3.5% |
| National Heart, Lung, and Blood Institute | 5 | 1.3% |
| National Institute of Child Health & Human Development | 6 | 1.5% |
| Non-US | 103 | 25.8% |
| Other US Federal | 66 | 16.5% |
| None noted/specified | 59 | 14.8% |
| Other Foundation | 44 | 11.0% |
| US Veterans’ Administration | 9 | 2.3% |
| Agency for Healthcare Research and Quality (US) | 9 | 2.3% |
| US State Funding | 5 | 1.3% |
| Patient-Centered Outcomes Research Institute (US) | 3 | 0.8% |
| Industry | 2 | 0.5% |
| Region | ||
| Africa | 40 | 10.0% |
| Asia | 17 | 4.3% |
| Australia | 18 | 4.5% |
| Canada | 26 | 6.5% |
| Caribbean | 3 | 0.8% |
| Central America | 7 | 1.8% |
| Europe | 65 | 16.3% |
| Middle East | 1 | 0.3% |
| Not specified | 3 | 0.8% |
| South America | 6 | 1.5% |
| USA | 227 | 56.8% |
Because studies could be funded by multiple sources, these categories are not mutually exclusive