Table 1. Baseline characteristics.

Characteristics	ESWT Group	US Group
Patients (n)	25	25
Occupation: physical worker/white-collar worker (n)	19/7	15/10
Age (yr)	47.9 ± 4.4*	49.0 ± 4.5*
Duration of symptoms (months)	14.9 ± 2.1*	15.1 ± 1.9*
Dominant arm (right/left)	25/0	25/0
Treatment side (right/left)	25/0	25/0
Previous unsuccessful treatment 6 months prioryes† yes/no (n)	25/0	25/0

*Values are mean ± SD

^† Including local steroid-injection, cryotherapy, phonophoresis, iontophoresis, laser therapy, kinesiotherapy, taping, massage, or orthoses.