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Table 3 Patient characteristics and health care utilization in chart review population

From: Cohort identification of axial spondyloarthritis in a large healthcare dataset: current and future methods

  Yes axSpA (n = 162) No axSpA (n = 409) Uncertain axSpA (n = 29)
No./Mean SD/% 95% CI No./Mean SD/% 95% CI No./Mean SD/% 95% CI
Age 56.2 13.5 54.1, 58.3 60.0 13.2 58.7, 61.2 58.1 14.3 52.9, 63.3
Gender (Male) 155 95.7 91.3, 98.3 363 88.8 85.3, 91.7 28 96.6 82.2, 99.9
Race
 White 128 79.0 71.9, 85.0 305 74.6 70.1, 78.7 22 75.9 56.5, 89.7
 Black 18 11.1 6.7, 17.0 63 15.4 12.0, 19.3 4 13.8 3.9, 31.7
 Other 2 1.2 0.2, 4.4 6 1.5 0.5, 3.2 0 0.0 0.0, 11.9
 Unknown 14 8.6 4.8, 14.1 35 8.6 6.0, 11.7 3 10.3 2.2, 27.4
Ethnicity
 Non-Hispanic 144 88.9 83.0, 93.3 367 89.7 86.4, 92.5 27 93.1 77.2, 99.2
 Hispanic 7 4.3 1.8, 8.7 19 4.6 2.8, 7.2 2 6.9 0.9, 22.8
 Unknown 11 6.8 3.4, 11.8 23 5.6 3.6, 8.3 0 0.0 0.0, 11.9
Geographic region
 Southeast 57 35.2 27.9, 43.1 153 37.4 32.7, 42.3 14 48.3 29.5, 67.5
 North Atlantic 35 21.6 15.5, 28.7 84 20.5 16.7, 24.8 7 24.1 10.3, 43.5
 Midwest 30 18.5 12.9, 25.4 68 16.6 13.2, 20.6 2 6.9 0.9, 22.8
 Continental 22 13.6 8.7, 19.8 58 14.2 11.0, 17.9 4 13.8 3.9, 31.7
 Pacific 18 11.1 6.7, 17.0 46 11.2 8.4, 14.7 2 6.9 0.9, 22.8
Duration of active VA system use during study period (years) 9.3 2.0 9.0, 9.6 8.9 2.4 8.7, 9.2 9.0 2.2 8.2, 9.8
#Provider visits/ year during active system use period 43.6 39.3 37.5, 49.6 45.9 42.6 41.7, 50.0 25.5 27.3 15.6, 35.5
  1. No. number, VA Veteran Affairs, CI confidence interval