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Table 5 Means of scale variables and their association with QFT result in TB patients

From: Use of a T cell interferon gamma release assay in the investigation for suspected active tuberculosis in a low prevalence area

  Number of observations QFT positive QFT negative 95% CI of difference t-test p-value
Age (years) 65 42 44 -12.4–7.9 -0.45 0.657
TB incidence of native country (new cases/100 000 pop.) 65 133 87 -17.7–110.0 1.45 0.157
Body Mass Index (BMI) 58 22.7 20.7 0.1–4.0 2.08 0.043*
Hemoglobin (Hb; g/L) 59 125 121 -0.7–14.3 1.01 0.315
ESR (mm) 41 45 56 -31.5–9.2 -1.12 0.272
C-reactive protein (CRP; mg/L) 59 42 79 -76.9–2.4 -1.91 0.065
Total leukocyte count (cells × 109/L) 60 5.9 8.8 -4.3–-1.4 -4.02 <0.001*
TST (mm) 40 23 15 1.2–15.4 2.40 0.025*
  1. * Significant difference of means