Table 1. Characteristics of patients with previous TB (N=20).
| Patient characteristics | Mean (SD)* | n (%) |
| Demographic characteristics | ||
| Overall age in years | 36.65 (12.83) | |
| Median (IQR) | 33 (29 - 41.5) | |
| Self-reported race | ||
| Asian | 1 (5) | |
| Black | 12 (60) | |
| Coloured | 1 (5) | |
| Indian | 5 (25) | |
| White | 1 (5) | |
| Gender | ||
| Male | 8 (40) | |
| Female | 12 (60) | |
| Clinical features | ||
| Details regarding prior TB infection | ||
| Duration since TB diagnosis (months) | 35.65 (31.02) | |
| Median (IQR) | 30 (14 - 42) | |
| Mode of TB diagnosis | ||
| Sputum | 16 (80) | |
| Bronchial washings | 3 (15) | |
| CT-guided FNA lung nodule (CXR suggestive of active TB) |
1 (5) | |
| Current presence of respiratory symptoms | ||
| Cough | 3 (15) | |
| Dyspnoea | 0 | |
| Sputum expectoration | 0 | |
| Haemoptysis | 0 | |
| Comorbidities and risk factors | ||
| Smoking | 0 | |
| Hypertension | 1 (5) | |
| Diabetes | 2 (10) | |
| Malignancy | 0 | |
| Screening for sleep-disordered breathing | ||
| Neck circumference >40 cm | 0 | |
| Overweight (BMI 25 - 30) | 1 (5) | |
| Obesity (BMI >30) | 0 | |
| Snoring | 0 | |
| Age >55 | 2 (5) | |
| Male sex | 8 (40) |
SD = standard deviation
IQR = interquartile range
FNA = fine-needle aspiration
CXR = chest X-ray
BMI = body mass index
* Unless otherwise specified