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Table 3 Crude incidence rates of TB

From: Risk of tuberculosis in patients with spondyloarthritis: data from a centralized electronic database in Hong Kong

  Patients with SpA General population (11)
Patient-years 27,308.4  
Number of events 43  
Incidence per 1000 patient-years 0.64 0.54
  on DMARD not on DMARD  
Patient-years 18,204.2 9104.2  
Number of events 29 14  
Incidence per 1000 patient-years 0.62 0.65 0.54
  Male Female Male (age adjusted) Female (age adjusted)
Patient-years 18,693.8 8614.5   
Average age 49 52   
Number of events 36 7   
Incidence per 1000 patient-years 0.52 1.23 0.48 0.41
  1. TB Tuberculosis; SpA Spondyloarthritis; DMARD Disease modifying antirheumatic drug