Table 1 Characteristics of patients newly diagnosed with rheumatoid arthritis in 2012 or 2013
From: Respiratory viral infections and the risk of rheumatoid arthritis
Clinical values | Patients (n = 24,117) |
|---|---|
Age | |
Overall mean ± SD (years) | 54.7 ± 13.2 |
Age group frequencies (n and %) | |
19–39 years | 3174 (13.2%) |
40–59 years | 12,332 (51.1%) |
≥ 60 years | 8611 (35.7%) |
Sex (n and %) | |
Women | 18,688 (77.5%) |
Men | 5429 (22.5%) |
Previous respiratory diseases (n and %) | |
Absence | 14,273 (59.18%) |
Presence | 9844 (40.82%) |
Number of patients per year (n and %) | |
2012 | 12,024 |
2013 | 12,093 |