Table 2 Characteristics of individuals with and without an ANA-related autoimmune disease
Characteristics | With AD (n = 20,497) | ANA +  (n = 10, 931) | ANA- (n = 9,566) | Without AD (n = 49,546) | ANA +  (n = 15,648) | ANA- (n = 33,898) |
|---|---|---|---|---|---|---|
Female (%) | 15,733 (76.8%) | 9,167 (83.9%) | 6566 (68.6%) | 32,612 (65.3%) | 11,588 (74.1%) | 20,730 (61.2%) |
White race (%)a | 15,957 (77.9%) | 8,305 (76.0%) | 7652 (80.0%) | 36,518 (73.7%) | 11,552 (73.8%) | 24,966 (73.7%) |
Year of birth | 1962 [1951, 1975] | 1962 [1950, 1976] | 1961 [1951, 1975] | 1963 [1951, 1978] | 1962 [1950, 1976] | 1964 [1952, 1978] |
Age at testing (years) | 49.4 [36.2, 60.2] | 49.5 [35.7, 60.7] | 49.2 [36.7, 59.5] | 47.9 [33.8, 59.5] | 50.2 [35.9, 61.8] | 46.9 [32.9, 58.3] |
Length of FU (years) | 8.7 [3.4, 14.1] | 8.6 [3.2, 13.9] | 8.9 [3.6, 14.4] | 6.4 [1.3, 12.6] | 6.2 [1.1, 12.4] | 6.4 [1.4, 12.7] |