Table 3 Clinical characteristics by BMI categories
CAPEA | RABBIT | NDB | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BMI (kg/m2) | <18.5 | 18.5 to <25 | 25 to <30 | ≥30 | <18.5 | 18.5 to <25 | 25 to <30 | ≥30 | <18.5 | 18.5 to <25 | 25 to <30 | ≥30 |
Age (years), mean (SD) | 58.8 (14.9) | 54.2 (15.6) | 58.2 (13.6) | 57.8 (12.6) | 49.8 (15.8) | 54.3 (13.7) | 58.1 (11.6) | 57 (10.9) | 59.9 (16.6) | 59.7 (15.0) | 63.4 (12.6) | 61.5 (12.2) |
Age at disease onset (years), mean | 58.6 | 53.9 | 58.0 | 57.5 | 37.7 | 43.9 | 48.2 | 48.3 | 44,4 | 45,9 | 50,1 | 48,1 |
Disease duration (years), mean (SD) | 0.2 | 0.3 | 0.2 | 0.3 | 12 (9.9) | 10.4 (9.3) | 9.9 (9.1) | 8.8 (8.5) | 15.5 (11.2) | 13.8 (10.4) | 13.3 (10.8) | 13.4 (10.5) |
Education, high (%) | 40.0 | 21.4 | 16.4 | 13.3 | 22.4 | 21.7 | 14.3 | 11.8 | 28.3 | 27.9 | 18.6 | 15.7 |
Smoking, current (%) | 63.6 | 36.3 | 32.3 | 27.6 | 30 | 24.2 | 20.7 | 18 | 35.7 | 22.4 | 19.8 | 13.8 |
Smoking, former (%) | 9.1 | 23.9 | 28.0 | 39.1 | 12.9 | 20.9 | 25.4 | 28.7 | 16.7 | 25.1 | 30.9 | 36.3 |
RF positive (%) | 45.5 | 55.4 | 49.8 | 46.9 | 73.3 | 74.7 | 71.6 | 66.4 | 72.2 | 72.4 | 69.9 | 72.3 |
DAS28, mean (SD) | 5.9 (0.7) | 4.9 (1.3) | 5.1 (1.3) | 5.2 (1.2) | 5.2 (1.3) | 5.1 (1.4) | 5.2 (1.4) | 5.3 (1.3) | 3.0 (1.3) | 3.0 (1.2) | 3.1 (1.2) | 3.4 (1.2) |
SJC, mean (SD) | 9.2 (5.8) | 6.4 (5.5) | 6.7 (5.7) | 6.2 (5.1) | 7.1 (5.5) | 6.8 (5.6) | 6.6 (5.6) | 6.2 (5.5) | 1.5 (2.4) | 1.4 (2.6) | 1.3 (2.7) | 1.4 (3.1) |
TJC, mean (SD) | 10.5 (5.2) | 9.7 (6.1) | 10.4 (6.7) | 10.7 (6.5) | 8.7 (6.9) | 8.7 (6.9) | 9 (7) | 9.4 (7.1) | 1.7 (3.3) | 2.0 (3.7) | 1.9 (3.6) | 2.3 (3.7) |
PGA, mean (SD) | 6.2 (2.3) | 5.2 (2.3) | 5.4 (2.3) | 5.7 (2.1) | 5.9 (2.2) | 5.8 (2.1) | 6 (2.1) | 6.2 (2.1) | 4.1 (2.7) | 3.8 (2.2) | 4.1 (2.2) | 4.6 (2.2) |
ESR, mean (mm/h) | 42.8 (28.3) | 31.5 (23.8) | 31.9 (23.1) | 35.7 (24.0) | 32.6 (25.3) | 30.2 (23.3) | 31.5 (23.1) | 32.2 (21.8) | 18.2 (16.6) | 18.0 (15.7) | 19.1 (16.4) | 23.1 (17.6) |
CRP, mean (mg/l) | 19.4 (34.3) | 19.0 (34.5) | 19.8 (26.5) | 20.6 (29.2) | 20.6 (29.9) | 18.4 (27.9) | 18.3 (26.1) | 17.4 (24.8) | 7.2 (9.8) | 9.3 (65.2) | 9.9 (50.8) | 10.4 (17.9) |
FFbH (0–100), mean (SD) | 69.9 (17.8) | 78.9 (19.0) | 74.2 (21.5) | 71.2 (21.0) | 62.5 (24.7) | 66.6 (22.9) | 62.9 (23.2) | 58.4 (23.1) | 74.8 (25.5) | 77.2 (23.1) | 72.6 (24.0) | 67.9 (24.4) |
No. of comorbidities, mean (SD) | 0.4 (0.5) | 0.6 (1.0) | 1.0 (1.3) | 1.5 (1.6) | 1.2 (1.6) | 1.2 (1.5) | 1.6 (1.7) | 2.0 (1.7) | 2.7 (2.3) | 2.3 (2.1) | 2.7 (2.2) | 2.8 (2.2) |
Prednisone equivalent in mg/day, mean (SD)* | NA | NA | NA | NA | 5.3 (4.8) | 5.1 (5.5) | 5.1 (5.5) | 5.3 (7.8) | 5.9 (4.0) | 4.8 (3.4) | 4.8 (3.0) | 5.2 (3.8) |