Table 1. Sociodemographic and disease-related characteristics of the 86 patients in the studied cluster.
| Variable | All Patients | Number of Patients with Hamburg Clone, n = 72a | Number of Patients with non-Hamburg Clone, n = 14a | p-Valueb |
| Age (years) | ||||
| Mean age (± standard deviation) | 45.03 (±14.9) | 44.0 (±15.4) | 50.4 (±10.8) | 0.14 |
| Range | 2–83 | 2–83 | 31–71 | |
| Sex | ||||
| Female | 16 (18.6) | 14 (19.4) | 2 (14.3) | 0.94 |
| Male | 70 (81.4) | 58 (80.6) | 12 (85.7) | |
| Place of birth | ||||
| German-born | 67 (77.9) | 56 (77.8) | 11 (78.6) | 0.77 |
| Foreign-born | 19 (22.1) | 16 (22.2) | 3 (21.4) | |
| Sputum smear for acid-fast organisms | ||||
| Positive | 36 (41.9) | 31 (43.1) | 5 (35.7) | 0.83 |
| Negative | 50 (58.1) | 41 (56.9) | 9 (64.3) | |
| Alcohol dependence | 50 (58.1) | 41 (56.9) | 9 (64.3) | 0.83 |
| Known injecting drug use | 6 (4.4) | 6 (8.4) | 0 (0.0) | 0.58 |
| Substance abuse (any) | 55 (40.1) | 46 (63.9) | 9 (64.3) | 0.78 |
| Unemployment | 58 (67.4) | 50 (69.7) | 8 (57.1) | 0.56 |
| Previous TB | 11 (12.8) | 9 (12.5) | 2 (14.3) | 0.80 |
| Domestic accommodation | ||||
| Permanent residence | 69 (80.2) | 58 (80.6) | 11 (78.6) | 0.84 |
| Homelessness | 17 (19.8) | 14 (19.4) | 3 (21.4) | |
| Resident at the bar | 3 (3.5) | 3 (4.1) | 0 (0.0) | 0.99 |
| Affiliation to alcohol-consuming milieu/street scene | 65 (75.6) | 53 (73.6) | 12 (85.7) | 0.53 |
| Spontaneously reported symptoms | 49 (57.0) | 40 (55.6) | 9 (64.3) | 0.76 |
| Contact tracing | 8 (9.3) | 7 (9.7) | 1 (7.1) | 0.84 |
| HIV seropositive | 5 (5.8) | 5 (6.9) | 0 (0.0) | 0.70 |
| Resistance to any drug | 0 (0.0) | 0 (0.0) | 0 (0.0) | — |
a
Data are given as number (percent) unless otherwise indicated.
b
The mean ages of the two patient groups were compared using the Wilcoxon rank sum test. All other data were compared using Pearson's χ-squared (or Fisher's exact) test.