Median (QR) or Mean SD or n (%)†
p-value
Total
(n = 197)
Osteoarthritis
(n = 56)
Rheumatoid arthritis
(n = 141)
Age (years) 570 (130) 640 (148) 550 (130) 0000‡***
Disease duration (years) 50 (100) 13 (22) 70 (103) 0000‡***
BMI 220 27 235 26 214 25 0954§
Gender
Male 33 (168%) 11 (196%) 22 (156%) 0493¶
Female 164 (832%) 45 (804%) 119 (844%)
Marital status
Married 166 (843%) 43 (768%) 123 (872%) 0069¶
Divorced/widowed 31 (157%) 13 (232%) 18 (127%)
Education
Below primary school 30 (152%) 10 (179%) 20 (142%) 00390¶*
Primary school 45 (228%) 12 (214%) 33 (234%)
Junior high school 56 (284%) 9 (161%) 47 (333%)
Senior high school or equivalent 49 (249%) 16 (286%) 33 (234%)
College and above 17 (86%) 9 (161%) 8 (57%)
Work status
Employed 13 (66%) 6 (107%) 7 (50%) 0200††
Unemployed 184 (934%) 50 (893%) 134 (950%)
Incomes (yuan)
3000 34 (173%) 17 (304%) 17 (121%)
Residence
Living in rural area 87 (442%) 20 (357%) 67 (475%) 0132¶
Living in urban area 110 (558%) 36 (643%) 74 (525%)
Living arrangement
Lives alone 14 (71%) 6 (107%) 8 (57%) 0228††
Lives with someone 183 (929%) 50 (893%) 133 (943%)
*p < 005, **p < 001, ***p < 0001.
†Median (QR) is given in the variables: age and disease duration; Mean SD is given in the variable: BMI; n (%) is given for categorical
variables.
‡Mann–Whitney U test.
††Fisher’s exact test.
§Student’s t