Table 1.

Characteristics of 48 patients with chronic lateral epicondylitis randomly assigned to receive injection of either botulinum toxin or placebo (saline)

Characteristic	Botulinum toxin group n = 24	Placebo group n = 24
Age, yr, mean (SD)	43.3 (7.8)	44.2 (7.7)
Female sex, no. (%)	22 (92)	22 (92)
Right-hand dominant, no. (%)	20 (83)	18 (75)
Epicondylitis on right side, no. (%)	8 (33)	10 (42)
Length of forearm, cm, mean (SD)	21.2 (1.8)	21.5 (1.7)
Duration of symptoms, mo, mean (SD)	12.5 (9.5)	14.0 (8.4)

Note: SD = standard deviation.