Table 1 General characteristics
n° of RCT (n = 42) | % | |
|---|---|---|
N° of countries (n = 14) | ||
United states | 11 | 26 |
United Kingdom | 9 | 21 |
Norway | 4 | 10 |
Netherland | 4 | 10 |
Brazil | 3 | 7 |
Australia | 3 | 7 |
Finland | 2 | 5 |
Spain | 1 | 2 |
Sweden | 1 | 2 |
Switzerland | 1 | 2 |
Italy | 1 | 2 |
Thailand | 1 | 2 |
Taiwan | 1 | 2 |
N° of journals (n = 19) | ||
Most frequent journals | ||
Spine | 13 | 31 |
Clinical Journal of Pain | 5 | 12 |
British Medical Journal | 5 | 12 |
Journal of Manipulative and Physiological Therapeutics | 3 | 7 |
N° of reported funding | 34 | 81 |
Multi-arm trials | 8 | 19 |
n° of comparisons (n = 81) | % | |
Comparisons | ||
active treatment versus active treatment | 55 | 68 |
active treatment versus inert treatment | 26 | 32 |