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Table 3 Relationship between prednisone use and asthma exacerbations, defined as two or more annual ED or inpatient visits for respiratory issues, among African Americans and Caucasians

From: FHIR PIT: an open software application for spatiotemporal integration of clinical data and environmental exposures data

 Patients with < 2 annual ED/inpatient visits for respiratory issues
N (%)
Patients with ≥ 2 annual ED/inpatient visits for respiratory issues
N (%)
Chi square, P value
African Americans (N = 6379)
Prednisone
  No4536 (89.41%)1078 (82.54%)X2 = 46.4781,
  Yes537 (10.59%)228 (17.46%)P < 0.0001
Caucasians (N = 13,176)
Prednisone
  No10,071 (89.99%)1675 (84.38%)X2 = 54.8241,
  Yes1120 (10.01%)310 (15.62%)P < 0.0001
  1. Abbreviations: ED, emergency department