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Table 2 Household Contact Demographic and Clinical Information

From: Yield of household contact tracing for tuberculosis in rural South Africa

Variable Overall (N = 279) Lab-Confirmed TB (N = 11) No Lab-Confirmed TB (N = 268) P-value*
N (%) N (%) N (%)
Female Sex 201 (72%) 10 (91%) 191 (71%) 0.301
Age Category
 Under 5 10 (4%) 0 (0%) 10 (4%)  
 5–14 55 (20%) 2 (18%) 53 (20%) 0.943
 15–39 112 (40%) 6 (55%) 106 (40%)
 40–64 66 (24%) 2 (18%) 64 (24%)
 65 and Older 36 (13%) 1 (9%) 35 (13%)
Female-Headed Household 146 (52%) 9 (82%) 137 (51%) 0.063
Head of Household Income (Median, IQR**) 1270 (0–2500) 1270 (1270–6300) 1270 (0–2350) 0.101
Education
 8th grade or less 140 (50%) 3 (27%) 137 (51%) 0.079
 At least some high school 114 (41%) 5 (45%) 109 (41%)
 More than high school 25 (9%) 3 (27%) 22 (8%)
Unemployed 149 (53%) 8 (73%) 141 (53%) 0.229
Body Mass Index (Median, IQR) 24 (20–28) 21 (19–29) 24 (20–28) 0.888
Current Smoker 11 (4%) 0 (0%) 11 (4%) 0.493
Previous TB Diagnosis 29 (10%) 1 (9%) 28 (11%) 0.879
History of IPT 5 (2%) 0 (0%) 5 (2%) 0.658
Number of Household members (Median, IQR) 5 (4–7) 6 (5–8) 5 (4–7) 0.248
HIV Status
 HIV-Infected 19 (7%) 0 (0%) 19 (7%) 0.792
 HIV-Uninfected 97 (35%) 3 (27%) 94 (35%)
 HIV Status Unknown 163 (58%) 8 (73%) 155 (58%)
TB Symptoms
 Cough 41 (15%) 0 (0%) 41 (15%) 0.377
 Fever 42 (15%) 1 (9%) 41 (15%) 1.0
 Fatigue 40 (14%) 0 (0%) 40 (15%) 0.374
 Loss of appetite 13 (5%) 1 (9%) 12 (4%) 0.414
 Weight loss 38 (14%) 1 (9%) 37 (14%) 1.0
 Night sweats 51 (18%) 1 (9%) 50 (19%) 0.695
 At least one TB symptom 122 (44%) 2 (18%) 120 (45%) 0.120
Symptom duration
 No symptoms 157 (56%) 9 (82%) 148 (55%) 0.465
  < 1 month 53 (19%) 1 (9%) 52 (19%)
 1–6 months 32 (11%) 1 (9%) 31 (12%)
  > 6 months 37 (13%) 0 (0%) 37 (14%)
Smear Positive 1 (0.4%) 1 (9%)
Culture Positive 28 (11%) 10 (91%) 18 (8%)
MTB Culture Positive 10 (4%) 10 (91%)
Smear or MTB Culture Positive 11 (4%) 11 (100%)
  1. *Categorical variables were tested using Fisher’s Exact Test, and continuous variables were tested with a Ranksum test
  2. **IQR: Interquartile range