Table 1.
Clinical characteristics of secondary M. tuberculosis cases from each TB pair according to time of reactivation.
| Variablea | Early reactivation (0–2 yrs) | Late reactivation (>2 yrs) | p valueb |
|---|---|---|---|
| Age (years) | 23.4 (n = 11) | 29.5 (n = 13) | 0.35 |
| Gender | 0.41 | ||
| Male | 7 | 5 | |
| Female | 4 | 8 | |
| Body mass index | 19.9 (n = 6) | 21.0 (n = 11) | 0.42 |
| BCG vaccine scar | 1.0 | ||
| Yes | 10 | 10 | |
| No | 1 | 2 | |
| NA | 0 | 1 | |
| HIV status (self- reported): | 1.0 | ||
| HIV Positive | 0 | 0 | |
| HIV Negative | 6 | 12 | |
| NA | 5 | 2 | |
| PPD max (mm) | 12.9 (n = 10) | 14.7 (n = 8) | 0.56 |
| Alcohol use | 1.0 | ||
| Yes | 1 | 1 | |
| No | 4 | 5 | |
| NA | 6 | 8 | |
| Smoking | 1.0 | ||
| Yes | 1 | 1 | |
| No | 4 | 5 | |
| NA | 6 | 8 | |
| Comorbiditiesc | 0.47 | ||
| Yes | 0 | 2 | |
| No | 5 | 5 | |
| NA | 6 | 7 |
aMeans are shown for numerical variables (age, body mass index, and PPD max), frequencies are shown for categorical variables (gender, BCG vaccine scar, HIV status, alcohol use, smoking, and co-morbidities). Not all data was available for each patient. Each variable value is indicated by the sample size used to derive the value.
bp Values comparing clinical characteristics in early vs. late reactivation are estimated using exact tests for categorical values (using available data only) and Wilcoxon rank sum tests for numerical variables.
cComorbidities include: renal failure, diabetes, cancer, rheumatoid arthritis, COPD or gastric surgery.