Skip to main content

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
  1. SD standard deviation