Table 1: Demographics.

RA (n = 45) AITD (n = 36) Control (n = 44)
Age (± StDev) 59.6 ± 13.1 55.1 ± 17.2 55.8 ± 16.4
Male : Female 11 : 34 6 : 30 13 : 31
Ethnicity (%)
Caucasian 73.3% 77.8% 77.3%
African American 22.2% 8.3% 15.9%
Asian 2.2% 5.6% 4.5%
Pacific Islander 2.2% 0% 0%
Hispanic 0% 2.8% 0%
Other 0% 5.6% 2.3%

Key: StDev - Standard Deviation