Table 1.

Characteristics of excluded studies

Subjects (n)	15
Male/female ratio	7/8
Age (years, mean ± SD)	50.07 ± 12.67
Body weight (kg, mean ± SD)	68.60 ± 8.79
Diagnosis (n)
Osteoarthritic pain (shoulder, knee)	3
Neuropathic pain (neuralgia, low back pain)	6
Recurrent headache	3
Muscular pain (contractions, sport injuries)	2
Dental pulpitis pain, on antibiotic therapy	1