Demographic and clinical status measures at presentation of patients with RA during 1980–2004 in 1892 patients in Jyväskylä, Finland, and 738 patients in Nashville, TN, USA.
| Feature | Jyväskylä | Nashville | ||
|---|---|---|---|---|
| N = 1892 | No. Patients Tested | N = 738 | No. Patients Tested | |
| Demographic measures | ||||
| Age, yrs, mean (SD) | 55 (16) | 1892 | 54 (14) | 738 |
| No. females, % | 67 | 1892 | 70 | 738 |
| Race Caucasian, % | 100 | 1892 | 86 | 736 |
| Clinical measures | ||||
| Duration of disease < 1 yr, % | 72 | 1778 | 24 | 729 |
| Duration of disease, median (IQR) | 6 (3, 12) months | 1778 | 3.3 (0.9, 11) years | 729 |
| Functional disability score on HAQ/MHAQ (0–3) | 0.88 (0.38, 1.38) | 1083 | 0.87 (0.38, 1.25) | 730 |
| Rheumatoid factor, % positive | 62 | 1874 | 63 | 292 |
| Hemoglobin, g/l | 131 (122, 140) | 1853 | 133 (122, 142) | 437 |
| ESR, mm/h | ||||
| Median (IQR): all patients | 30 (16, 49) | 1892 | 30 (15, 45) | 478 |
| Median (IQR): women | 30 (17, 50) | 1267 | 30 (15, 47) | 341 |
| Median (IQR): men | 31 (16, 49) | 625 | 27 (12, 43) | 137 |
| ESR < 28 mm/h, % | 45 | 1892 | 47 | 478 |
| < 30 mm/h for women; < 20 for men | ||||
| All patients, % | 43 | 1892 | 45 | 478 |
| Women, % | 49 | 1267 | 48 | 341 |
| Men, % | 32 | 625 | 37 | 137 |
| ≤ 20 mm/h for women; ≤ 10 for men | ||||
| All patients, % | 25 | 1892 | 30 | 143 |
| Women, % | 31 | 1267 | 33 | 341 |
| Men, % | 14 | 625 | 21 | 137 |
| C-reactive protein, mg/l | ||||
| Median (IQR) | 12 (3, 34) | 1749 | 6 (3, 20) | 175 |
| C-reactive protein < 10 mg/l, % | 44 | 1749 | 58 | 175 |
CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; HAQ: Health Assessment Questionnaire; IQR: interquartile range; MHAQ: Multidimensional Health Assessment Questionnaire.