Table 3.

Participant Characteristics and SF-36 Scores, by Nationality

Characteristic	Qatari (N=380)	Non-Qatari (N=460)	P-value
Type of Arthritis, N (%)
OA	28 (7.4)	12 (2.6)	0.001
RA	20 (5.3)	16 (3.5)	0.20
BMI, N (%)
<25	13 (3.4)	16 (3.5)	0.32
25–29.9	71 (18.7)	106 (23.0)
30–34.9	127 (33.4)	159 (34.6)
≥ 35	169 (44.5)	179 (38.9)
SF-36 Domain (mean ± SD)
Physical Function	73.3 ± 20.2	80.0 ± 16.5	<.0001
Role Physical*	58.2 ± 49.0	63.8 ± 47.5	0.12
Bodily Pain	51.7 ± 31.1	54.1 ± 31.0	0.26
General Health	53.3 ± 9.6	53.0 ± 10.6	0.67
Vitality	49.7 ± 19.1	49.6 ± 20.6	0.90
Social Function*	78.9 ± 27.4	81.2 ± 27.4	0.11
Role Emotional*	79.4 ± 40.1	77.6 ± 41.3	0.56
Mental Health	66.8 ± 19.4	64.6 ± 20.5	0.11

^*p-value was calculated by Wilcoxon ranked-sum test.