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Table 1 Characteristics of subjects at the diagnosis of pulmonary tuberculosisa

From: Using genotyping to delineate tuberculosis transmission in long-term care facilities: single facility 4-year experience

Characteristics All n = 42 Clustered infection n = 32 Individual infection n = 10 P value
Demographic data
 Age (years) 76.5 (33.8) 62.3 (35.2) 85.8 (5.1) P < 0.01
 Male (%) 27 (64.3) 8 (56.2) 9 (90.0) P = 0.07
 Body mass index(kg/m2) 20.3 (1.9) 20.8 (4.7) 19.6 (2.6) P = 0.15
Dependent activity of daily living 18 (42.9) 8 (25.0) 9 (90.0) P < 0.01
 Nasogastric tube feeding % 17 (40.5) 8 (25.0) 9 (90.0) P < 0.01
 Foley insertion % 17 (40.5) 8 (25.0) 9 (90.0) P < 0.01
 Tracheostomy % 15 (35.7) 9 (28.1) 6 (60.0) P = 0.07
TB severity
 Cavity on chest X-ray 4 (9.5) 4 (12.5) 0(0.0) P = 0.56
 Positive sputum smear 6 (14.3) 5 (15.6) 1 (10.0) P = 0.56
Underlying diseases
 Hypertension % 18 (42.9) 13 (40.6) 5 (50.0) P = 0.72
 Diabetes mellitus % 8 (19.0) 7 (21.9) 1 (10.0) P = 0.66
 Congestive heart failure % 7 (16.7) 5 (15.6) 2 (20.0) P = 0.54
 Chronic renal failure (Cr > 2) % 6 (14.3) 5 (15.6) 1 (10.0) P = 0.56
 Old stroke 6 (38.1) 11 (34.4) 5 (50.0) P = 0.47
Chronic obstructive pulmonary disease % 8 (19.0) 4 (12.5) 4 (40.0) P = 0.08
 Hepatitis B virus carrier 2 (4.8) 2 (6.7) 0(0.0) P = 0.56
 Hepatitis C virus carrier 4 (9.5) 3 (10.0) 1 (10.0) P = 0.74
Laboratory data
 White blood cell count (cells/μl) 7140 (2680) 7315 (2937) 6930 (1178) P = 0.31
 Hemoglobin (g/dL) 11.4 (2.1) 11.4 (2.1) 11.4 (1.7) P = 0.57
 Platelet (103/μl) 238 (101) 247 (116) 215 (69) P = 027
 Creatinine (mg/dL) 0.8 (0.3) 0.8 (0.5) 0.7 (0.3) P = 0.22
 Albumin (mg/dL) 3.4 (0.9) 3.4 (1.0) 3.4 (0.5) P = 0.63
  1. aData represent N(%) and median (interquartile range).