Table 1 Characteristics of individuals with an antinuclear antibody test
Characteristics | ANA tested cohort (n = 70,043) | ANA positive (n = 26,579) | ANA negative (n = 43,464) |
|---|---|---|---|
Female (%) | 48,051 (68.6%) | 20,755 (78.1%) | 27,296 (62.8%) |
White race (%)a | 52,475 (74.9%) | 19,857 (74.7%) | 32,618 (75%) |
Year of birth | 1963 [1951, 1977] | 1962 [1950, 1976] | 1963 [1952, 1978] |
Age at testing (years) | 48.4 [34.5, 59.7] | 49.9 [35.9, 61.3] | 47.5 [33.7, 58.6] |
Length of FU (years) | 7.09 [1.88, 13.10] | 7.23 [1.92, 13.04] | 7.01 [1.85, 13.14] |