Table 1 Demographic case-mix variables according to group
Case-mix variable | CS (n = 54) | CR (n = 364) | p value | |
|---|---|---|---|---|
Age (years), mean (SD) | 68.5 (9.4) | 68.8 (8.6) | 0.81* | |
Gender, n (% of group) | Male | 12 (22.2) | 164 (45.1) | 0.002** |
Female | 42 (77.8) | 200 (54.9) | ||
BMI (kg/m2), mean (SD) | 31.5 (8.1) | 31.1 (5.6) | 0.68* | |
Comorbidity, n (% of group) | ||||
Diabetes | Yes | 8 (14.0) | 41 (11.0) | 0.45** |
No | 46 (86.0) | 323 (89.0) | ||
Rheumatoid arthritis | Yes | 10 (18.5) | 52 (14.3) | 0.41** |
No | 44 (81.5) | 312 (85.7) | ||
Back pain | Yes | 25 | 156 | 0.63** |
No | 29 | 208 | ||
Depression | Yes | 10 | 49 | 0.32** |
No | 44 | 315 | ||
Ischaemic heart disease | Yes | 5 (9.3) | 46 (12.6) | 0.5** |
No | 49 (90.7) | 318 (87.4) | ||
Hypertension | Yes | 25 (46.3) | 182 (50.0) | 0.8** |
No | 29 (53.7) | 182 (50.0) | ||