. Author manuscript; available in PMC: 2012 Mar 1.

Published in final edited form as: Arthritis Care Res (Hoboken). 2010 Oct 18;63(3):320–327. doi: 10.1002/acr.20373

Table 1.

Characteristics of osteoarthritis patients (n = 26) and healthy controls (n = 33).^*

Characteristic	Osteoarthritis	Controls	P value
Demographics
Mean age, years (SD)	59.0 (7.5)	57.7 (10.3)	0.59^†
Female (N, %)	20 (76.9)	23 (69.7)	0.57^‡
Caucasian (N, %)	20 (76.9)	28 (84.9)	0.73^‡
Median body mass index, kg/m² (IQR)	27.5 (24.8, 32.6)	27.9 (24.3, 30.0)	0.60^§
Median SF-36 Subscale Score
Physical function (IQR)	65.3 (30.3, 80.3)	90.0 (75.0, 95.0)	0.0007^§
Role physical (IQR)	50.0 (25.0, 100.0)	100.0 (75.0, 100.0)	0.002^§
Bodily pain (IQR)	55.0 (45.0, 67.5)	90.0 (70.0, 100.0)	<0.0001^§
General health (IQR)	67.5 (45.0, 75.0)	75.0 (70.0, 85.0)	0.03^§
Vitality (IQR)	65.0 (50.0, 75.0)	65.0 (55.0, 75.0)	0.61^§
Social functioning (IQR)	87.5 (62.5, 100.0)	100.0 (87.5, 100.0)	0.03^§
Role emotional (IQR)	100.0 (66.7, 100.0)	100.0 (100.0. 100.0)	0.04^§
Mental health (IQR)	82.0 (68.0, 92.0)	84.0 (65.0, 92.0)	0.93^§

SD = standard deviation; SF-36 = Short Form-36; IQR = interquartile range.

^†

By Student’s t-test.

^‡

By Fisher’s exact test.

^§

By Wilcoxon’s rank sum test.