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Table 1 Frequency (%) of demographic and health status characteristics of study cohort, stratified by type of joint replacement

From: Differential item functioning of the SF-12 in a population-based regional joint replacement registry

Characteristic THA
n (%)
TKA
n (%)
Overall
n (%)
Total 3714 (42.1) 5106 (57.9) 8820 (100.0)
Sex
 Female 1982 (53.4) 3074 (60.2) 5056 (57.3)
 Male 1732 (46.6) 2032 (39.8) 3764 (42.7)
Age
 ≤ 60 years 1253 (33.7) 1534 (30.0) 2787 (31.6)
 61–70 years 1214 (32.6) 1938 (38.0) 3152 (35.7)
 > 70 years 1247 (33.6) 1634 (32.0) 2881 (32.7)
Body Weight Status
 Under weight or normal weight (BMI < = 25.0) 755 (20.3) 533 (10.4) 1288 (14.6)
 Overweight (BMI = 25.1–29.9) 1406 (37.9) 1466 (28.7) 2872 (32.6)
 Obese (BMI = 30.0+) 1553 (41.8) 3107 (60.8) 4660 (52.8)
Multimorbidity
 2+ Chronic conditions 1986 (53.5) 3174 (62.2) 5160 (58.5)
 < 2 Chronic conditions 1728 (46.5) 1932 (37.8) 3660 (41.5)
Chronic Conditions
 Hypertension 1639 (44.1) 2725 (53.4) 4364 (49.5)
 Other osteoarthritis 1476 (39.7) 2272 (44.5) 3748 (42.5)
 Back pain 1450 (39.0) 1914 (37.5) 3364 (38.1)
 Diabetes 417 (11.2) 913 (17.9) 1330 (15.1)
 Heart disease 385 (10.4) 559 (10.9) 944 (10.7)
 Depression 395 (10.6) 705 (13.8) 1100 (12.5)
 Rheumatoid arthritis 294 (7.9) 585 (11.5) 879 (10.0)
 Stomach ulcer 168 (4.5) 337 (6.6) 505 (5.7)
 Cancer 183 (4.9) 234 (4.6) 417 (4.7)
 Anemia 153 (4.1) 228 (4.5) 381 (4.3)
 Lung disease 165 (4.4) 263 (5.2) 428 (4.9)
 Kidney disease 72 (1.9) 104 (2.0) 176 (2.0)
 Liver disease 36 (1.0) 58 (1.1) 94 (1.1)
 Other condition 741 (20.0) 1165 (22.8) 1906 (21.6)
  1. THA Total hip arthroplasty, TKA Total knee arthroplasty, BMI Body mass index