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Table 1 Baseline Characteristics of medical worker

From: Upregulation of PD-1 expression on circulating CD8+ but not CD4+ T cells is associated with tuberculosis infection in health care workers

Characteristics Total QFT +(n = 32) QFT -(n = 101) Statistical value P value
Sex
 Male 28 (21.1) 5 (15.6) 23 (22.8) 0.747 0.387
 Female 105 (78.9) 27 (84.4) 78 (77.2)
Age 35.1 ± 8.4 38.0 ± 8.0 34.2 ± 5.2 −1.763 0.078
Working time (year) 12.5 ± 10.0 16.5 ± 8.5 11.2 ± 6.2 −2.833 0.005
  < =2 15 (11.3) 1 (3.1) 14 (13.9) 13.067 < 0.001
  (3–5) 20 (15.0) 0 20 (19.8)
  (6–15) 61 (45.9) 16 (50) 45 (44.6)
 (16–25) 12 (9.0) 6 (18.8) 6 (5.9)
  > 25 25 (18.8) 9 (28.1) 16 (15.8)
Occupation
 Doctor 34 (25.6) 11 (34.3) 23 (22.8) 7.891 0.048
 Nurse 79 (59.4) 21 (65.7) 58 (57.4)
 Laboratory staff 13 (9.8) 0 13 (12.8)
 Radiologist 7 (5.3) 0 7 (7.0)
Chronic medical illness
 Hypertension 4 (3.0) 2 (6.3) 2 (2.0) 3.058 0.09
 Type 2 diabetes 5 (3.8) 3 (9.4) 2 (2.0) 1.3 0.244
Clinical biochemical index
 White blood cell count(WBC), 10^9/L   6.063 ± 0.938 6.701 ± 1.651 −0.993 0.321
 Lymphocyte count(L), 10^9/L   2.059 ± 0.451 2.131 ± 0.421 −0.704 0.481
 Alanine aminotransferase(ALT), U/L   17.969 ± 9.469 21.457 ± 12.707 −0.993 0.321
 Plasma creatinine, μmol/L   59.941 ± 8.941 63.823 ± 8.823 −1.752 0.08
Cellular immunological index
 CD4+ T cell count, 10^9/L   0.727 ± 0.246 0.763 ± 0.225 0.772 0.442
 CD8+ T cell count, 10^9/L   0.569 ± 0.193 0.558 ± 0.213 −0.263 0.793
 T cell count, 10^9/L   1.391 ± 0.283 1.431 ± 0.315 −0.156 0.876
 B cell count, 10^9/L   0.242 ± 0.097 0.248 ± 0.082 −0.024 0.981
 NK cell count, 10^9/L   17.061 ± 5.231 18.14 ± 6.205 −0.303 0.762