Table 3 An overview on the use of blinding, control groups and placebo
From: Myofascial trigger points in migraine and tension-type headache
| Â | Migraine | Tension-type headache | Total |
|---|---|---|---|
Blinding | 36% (5/14 relevant studies) | 79% (15/19 relevant studies) | 61% (19/33 relevant studies) |
Control group | 44% (4/9 relevant studies) | 79% (11/14 relevant studies) | 65% (15/23 relevant studies) |
Placebo | 40% (2/5 relevant studies) | 80% (4/5 relevant studies) | 60% (6/10 relevant studies) |