Effects of hydrogen inhalation duration on symptom relief in elderly patients with knee osteoarthritis: A pilot study

Table 2 Western Ontario and McMaster Universities Osteoarthritis Index total score, Western Ontario and McMaster Universities Osteoarthritis Index subscale scores, and 36-item Short-Form Health Survey of subjects by arm in baseline

Variables	LT group (n = 24)	ST group (n = 25)	P value
WOMAC, mean (SD)
WOMAC total score	100.3 (22.3)	84.9 (17.8)	0.010
WOMAC pain score	19.0 (5.5)	18.2 (5.3)	0.625
WOMAC stiffness score	9.3 (4.1)	9.0 (3.2)	0.722
WOMAC function score	71.9 (19.5)	57.7 (14.4)	0.005
SF-36, mean (SD)
Physical function	51.0 (12.5)	58.2 (17.4)	0.105
Physical role	52.1 (40.3)	45.0 (40.2)	0.541
Social function	79.2 (15.5)	79.5 (13.9)	0.937
Emotion role	66.7 (40.5)	64.0 (40.7)	0.820
Body pain	42.3 (13.3)	43.3 (10.0)	0.759
Vitality	68.1 (12.2)	65.0 (15.7)	0.443
General health	44.9 (14.6)	46.2 (17.6)	0.776
Mental health	69.7 (12.0)	65.6 (15.7)	0.315

Data are expressed as mean (SD). WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index; LT: Long-term; ST: Short-term; SF-36: 36-item Short-Form Health Survey.