Table 2 Demographic and clinical features of TB patients included from King County by genotypic clustering of M. tuberculosis 2004-2008 a
From: Neighborhood socioeconomic position and tuberculosis transmission: a retrospective cohort study
Patient characteristic | Overall | Unique | Clustered | P-valuec |
|---|---|---|---|---|
N (%)b | N (%) | N (%) | ||
Total | 519 (100.0) | 307 (59.1) | 212 (40.9) | Â |
Sex, male | 309 (59.5) | 170 (55.4) | 139 (65.6) | P = 0.020 |
Mean diagnosis age, years | 45.2 | 46.3 | 43.5 | P = 0.015 |
|  |  |  | P = 0.055 | |
Age categories | Â | Â | Â | Â |
  0-4 | 3 (0.6) | 2 (0.7) | 1 (0.5) |  |
  5-14 | 6 (1.2) | 4 (1.3) | 2 (0.9) | |
  15-24 | 89 (17.2) | 51 (16.6) | 38 (17.9) | |
  25-44 | 180 (34.7) | 105 (34.2) | 75 (35.4) | |
  45-64 | 130 (25.1) | 66 (21.5) | 64 (30.2) | |
  65+ | 111 (21.4) | 79 (25.7) | 32 (15.1) | |
Race |  |  |  | P = 0.024 |
  American Indian | 14 (2.7) | 6 (2.0) | 8 (3.8) | |
  Asian | 226 (43.6) | 141 (46.8) | 85 (40.3) | |
  Black | 145 (27.9) | 77 (25.6) | 68 (32.2) | |
  Pacific Islander | 18 (3.5) | 6 (2.0) | 12 (5.7) | |
  White | 109 (21.0) | 71 (23.6) | 38 (18.0) | |
  Multiple races | 2 (0.4) |  |  | |
  Unknown | 5 (1.0 |  |  | |
Ethnicity |  |  |  | P = 0.050 |
  Hispanicd | 56 (10.8) | 40 (13.1) | 16 (7.6) | |
  Missing or | 3 (0.6) |  |  | |
  Unknown |  |  |  | |
Country of origin e |  |  |  | P < 0.001 |
  US-born | 101 (19.5) | 41 (13.4) | 60 (28.3) | |
  Foreign-born | 418 (80.5) | 266 (86.6) | 152 (71.7) | |
Time from US arrival to TB diagnosis, years f |  |  |  | P = 0.123 |
  0-4 | 156 (37.6) | 103 (40.6) | 54 (37.8) | |
  5-9 | 71 (17.1) | 53 (20.9) | 19 (13.3) | |
  10-19 | 90 (21.7) | 55 (21.7) | 36 (25.2) | |
  20+ | 77 (18.6) | 43 (16.9) | 34 (23.8) | |
  Missing | 21 (5.1) |  |  | |
HIV status, if known |  |  |  | P = 0.623 |
  Negative | 408 (78.6) | 231 (93.5) | 177 (94.7) | |
  Positive | 26 (5.0) | 16 (6.5) | 10 (5.4) | |
Previous TB |  |  |  | P = 0.668 |
  Yes | 37 (7.1) | 23 (7.7) | 14 (6.7) | |
  No | 473 (91.1) | 277 (92.3) | 196 (93.3) | |
  Unknown | 9 (1.7) |  |  | |
Homeless within past year |  |  |  | P < 0.001 |
  No | 452 (87.1) | 281 (92.1) | 171 (80.7) | |
  Yes | 65 (12.5) | 24 (7.9) | 41 (19.3) | |
  Unknown | 2 (0.4) |  |  | |
Unemployed within past 24 months |  |  |  | P = 0.613 |
  No | 309 (59.5) | 180 (58.6) | 129 (60.9) | |
  Yes | 210 (40.5) | 127 (41.4) | 83 (39.2) | |
Substance abuse within past year g |  |  |  | P < 0.001 |
  No | 442 (87.7) | 275 (93.5) | 167 (75.5) | |
  Yes | 62 (12.3) | 19 (6.5) | 43 (20.5) | |
Provider type |  |  |  | P = 0.059 |
  Health Dept. | 411 (79.2) | 233 (76.4) | 178 (84.8) | |
  Private provider | 35 (6.7) | 23 (7.5) | 12 (5.7) | |
  Both | 69 (13.3) | 49 (16.1) | 20 (9.5) | |
  Missing | 4 (0.8) |  |  | |
Site of disease |  |  |  | P = 0.010 |
  Pulmonary | 380 (73.2) | 212 (69.1) | 168 (79.3) | |
  Extra-pulmonary only | 139 (26.8) | 95 (30.9) | 44 (20.8) | |
Sputum smear result |  |  |  | P = 0.079 |
  Positive | 194 (37.4) | 103 (39.2) | 91 (47.4) | |
  Negative | 261 (50.3) | 160 (60.8) | 101 (52.6) | |
  Not done | 63 (12.1) |  |  | |
  Unknown | 1 (0.2) |  |  | |
Chest radiographic result |  |  |  | P = 0.386 |
  Normal | 90 (17.3) | 57 (18.8) | 33 (15.8) | |
  Abnormal | 423 (81.5) | 247 (81.3) | 176 (84.2) | |
  Not done | 5 (1.0) |  |  | |
  Unknown | 1 (0.2) |  |  | |
Chest radiographic abnormality h |  |  |  | P < 0.001 |
  Cavitary | 112 (26.5) | 52 (21.3) | 60 (34.7) | |
  Noncavitary | 305 (72.1) | 192 (78.7) | 113 (65.4) | |
  Unknown | 6 (1.4) |  |  |