Table 1 Baseline characteristics of participants
Variable | Strong EA (n = 145) | Weak EA (n = 72) | Sham EA (n = 75) |
|---|---|---|---|
Female, no. (%) | 106 (73.1) | 57 (79.2) | 60 (80.0) |
Age, mean (SD), years | 64.6 (10.2) | 63.7 (9.3) | 61.9 (9.5) |
Symptom duration, years (%) | |||
 < 0.5 years | 51 (35.2) | 27 (37.5) | 27 (36.0) |
 0.5 to 3 years | 60 (41.4) | 27 (37.5) | 23 (30.7) |
 3 to 5 years | 14 (9.7) | 8 (11.1) | 15 (20.0) |
 ≥ 5 years | 20 (13.8) | 10 (13.9) | 10 (13.3) |
Height, mean (SD), m | 1.62 (0.07) | 1.62 (0.07) | 1.64 (0.08) |
Weight, mean (SD), kg | 59.8 (7.8) | 59.4 (7.5) | 61.8 (8.5) |
BMI, mean (SD) | 22.67 (2.22) | 22.46 (1.87) | 22.93 (1.86) |
Previous treatment, no. of patients (%) | |||
 Physical therapy | 25 (17.2) | 11 (15.3) | 12 (16.0) |
 Corticosteroid injections | 5 (3.5) | 2 (2.8) | 2 (2.7) |
 Acupuncture | 21 (14.5) | 8 (10.8) | 10 (13.3) |
 Exercise | 36 (24.8) | 15 (20.3) | 16 (21.3) |