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Table 1 Demographics and clinical characteristics of the study participants

From: Rapid diagnosis of new and relapse tuberculosis by quantification of a circulating antigen in HIV-infected adults in the Greater Houston metropolitan area

  Total patients All non-TB controls (N = 50) All TB cases (N = 60) TB cases  
Culture-positive (n = 48) Culture-negative (n = 12) p value
Age, years (IQR)a 39 (34–46) 41 (34–46) 37 (34–48) 37 (34–48) 38 (33–48) 0.470b/0.978c
Sex, male (%)a 82 (74.5) 36 (72.0) 46 (76.7) 35 (72.9) 11 (91.7) 0.662b/0.262c
Race: no. (%)a       0.749b/0.713c
 Black 72 (65.5) 36 (72.0) 36 (60.0) 28 (58.3) 8 (66.7)  
 White 16 (14.5) 5 (10.0) 11 (18.3) 10 (20.8) 1 (8.3)  
 Hispanic 20 (18.2) 8 (16.0) 12 (20.0) 9 (18.8) 3 (25.0)  
 Asian or Pacific Islander 2 (1.8) 1 (2.0) 1 (1.7) 1 (2.1) – (–)  
CD4 T cells/μL (IQR)a 110 (39–320) 127 (56–358) 99 (35–280) 73 (35–257) 237 (16–458) 0.364b/0.260c
Log10 HIV copies/mL (IQR)a 5.3 (4.6–5.6) 5.4 (4.6–5.7) 5.1 (4.3–5.6) 5.5 (5.0–5.8) 3.9 (2.8–5.5) 0.309b/0.002c
TB disease site: no. (%)a       0.013c
 PTB 30 (50.0)   30 (50.0) 20 (41.7) 10 (83.3)  
 EPTB 37 (33.6)   9 (15.0) 7 (14.9) 2 (16.7)  
 PTB and EPTB 47 (42.7)   21 (35.0) 21 (46.8) – (–)  
History of previous TB: no. (%)a 24 (21.8) 15 (30.0) 9 (15.0) 7 (14.6) 2 (16.7) 0.060b/> 0.999c
AFB smear positive: no. (%)a 13 (21.7)   12 (20.0) 12 (25.0) 1 (8.3)d
CXR cavitary lesions: no. (%)a 14 (23.3)   14 (23.3) 12 (31.6) 2 (23.3) 0.542c
  1. Data, no. (% or IQR)
  2. IQR interquartile range, AFB acid-fast bacilli, CXR chest X-ray, PTB pulmonary TB, EPTB extrapulmonary TB
  3. aPercentage or interquartile range of corresponding column population
  4. b p value of Student t test, Mann-Whitney U test, or chi-square test for difference between All non-TB controls and All TB cases
  5. c p value of chi-square test for difference between culture-positive and culture-negative TB cases
  6. dOne culture-negative TB case was marked AFB-positive with a “rare bacilli” notation