Table 1 Characteristics of study population (n = 3840)
From: Effective factors on Sharp Score in patients with rheumatoid arthritis: a retrospective study
Quantitative Variables | Mean | Standard Deviation |
Age (years) | 56.95 | 12.68 |
Symptom duration (years) | 3.45 | 1.09 |
Disease duration (years) | 6.92 | 1.20 |
BMI (Kg/m2) | 22.80 | 4.51 |
Tender joint count, 0–28 | 10.73 | 5.63 |
| Â | Subjects | Percentage |
Sharp score | ||
 ≤ 0 score | 111 | 2.89 |
 > 0 score, ≤ 50 score | 2674 | 69.64 |
 > 50 score | 1055 | 27.47 |
Gender | ||
 Male | 666 | 17.34 |
 Female | 3174 | 82.66 |
Ever smoker | 458 | 11.93 |
Ever drinker | 582 | 15.16 |
RF positivity | 3001 | 78.15 |
CCP positivity | 3636 | 94.68 |
Presence of radiographic erosions | 2162 | 56.32 |
Prednisolone use | 2150 | 55.98 |
DMARD treatment (at baseline) | ||
 DMARD-naive | 3017 | 78.56 |
 MTX monotherapy | 1368 | 35.62 |
 Non-MTX csDMARD | 888 | 23.13 |
 Combination csDMARD | 905 | 23.56 |
Education status | ||
 None or primary | 1545 | 40.23 |
 Secondary or vocational | 1740 | 45.31 |
 Tertiary | 555 | 14.45 |
Housing status | ||
 Private housing | 2397 | 62.42 |
 Government housing | 1443 | 37.58 |
Employment status | ||
 Currently employed | 1735 | 45.18 |
 Unemployment, retired or homemaker | 2105 | 54.82 |
Marital status | ||
 Currently married | 3657 | 95.23 |
 Single, divorced or widowed | 183 | 4.77 |
| Â | Interquartile range (IQR) | |
Sharp score | 20.00 (7.00, 56.00) | |
DAS28 score | 5.50 (4.00, 7.28) | |
ESR (mm/h) | 42.00 (22.00, 68.00) | |
CRP (mg/L) | 15.82 (3.61, 41.49) | |
RF (U/ml) | 79.15 (19.90, 195.05) | |
CCP (U/ml) | 132.98 (25.00, 402.67) | |
IGA (g/L) | 2.47 (1.87, 3.27) | |
IGG (g/L) | 13.45 (11.00, 16.40) | |
IGM (g/L) | 1.35 (0.91, 1.68) | |
C3 (g/L) | 112.45 (96.50, 129.30) | |
C4 (g/L) | 24.7 (19.20, 30.80) | |
BALP (ng/ml) | 660.13 (431.37, 851.60) | |
BGP (ng/ml) | 3479.49 (2871.84, 4825.99) | |
OPG (ng/ml) | 117.20 (948.12, 1338.62) | |
RANKL (ng/ml) | 1085.40 (955.51, 1322.46) | |