Table 1.

Baseline demographics and clinical characteristics of all randomized subjects.

	A+HA	Placebo
	n = 24	n = 23	P value
Gender (n, %)			.93
Male	6 (25.0%)	6 (26.1%)
Female	18 (75.0%)	17 (73.9%)
Age, mean ± SD, y	61.51 ± 9.93	60.8 ± 10.70	.71
Weight, mean ± SD, kg	65.8 ± 9.49	73.4 ± 29.10	.79
Height, mean ± SD, cm	161.6 ± 7.90	152.2 ± 30.1	.53
BMI, mean ± SD, kg/m2	25.17 ± 3.10	25.7 ± 3.70	.49
Brief pain inventory (scale 0–10), mean ± SD	2.58 ± 1.25	2.65 ± 0.71	.47
WOMAC scores, mean ± SD
Pain	4.3 ± 2.76	4.0 ± 2.91	.58
Stiffness	1.7 ± 1.55	1.2 ± 0.98	.34
Physical function	9.3 ± 5.91	11.5 ± 9.59	.62
Total	15.2 ± 7.79	16.7 ± 12.65	.87
SF-36 scores, mean ± SD
Physical functioning	23.2 ± 3.19	22.0 ± 5.66	.72
Role limitations-physical	5.3 ± 1.59	5.0 ± 1.83	.65
Bodily pain	8.9 ± 1.73	8.6 ± 1.51	.30
General health	17.7 ± 3.29	18.1 ± 2.46	.88
Vitality	17.4 ± 3.85	17.5 ± 3.08	.85
Social functioning	8.6 ± 1.58	8.5 ± 1.62	.83
Role limitations-emotional	0.2 ± 0.66	0.7 ± 1.18	.12
Mental health	22.3 ± 3.56	22.6 ± 2.68	.97
Total	103.7 ± 11.70	101.4 ± 16.27	.76