TABLE 3.
Characteristics of B Classification Patients Who Received Full Clinical Evaluations, by Diagnosis Category: BCHD, Baltimore, MD, 2010–2012
| Active TB (n = 6), No. (%) or Median (IQR) | Latent TB (n = 76), No. (%) or Median (IQR) | No TB Infection or Disease (n = 62), No. (%) or Median (IQR) | P | |
|---|---|---|---|---|
|
|
||||
| B classification | < .001 | |||
| B1 | 5/6 (83%) | 39/76 (51%) | 55/62 (89%) | – |
| B2 | 1/6 (17%) | 35/76 (46%) | 7/62 (11%) | – |
| B3 | 0/6 (0%) | 2/76 (3%) | 0/62 (0%) | – |
| Gender | – | |||
| Female | 1/6 (17%) | 24/76 (32%) | 26/62 (42%) | – |
| Male | 5/6 (83%) | 52/76 (68%) | 36/62 (58%) | – |
| Age, y | 29 (14–30) | 23 (12–49) | 41 (27–59) | .021 |
| Country of origination/origin | – | |||
| Other | 0/6 (0%) | 7/76 (9%) | 10/62 (16%) | – |
| Nepal/Bhutan | 3/6 (50%) | 50/76 (66%) | 38/62 (61%) | – |
| Philippines | 0/6 (0%) | 8/76 (11%) | 11/62 (18%) | – |
| Ethiopia/Eritrea | 2/6 (33%) | 6/76 (8%) | 1/62 (2%) | – |
| Dominican Republic | 0/6 (0%) | 2/76 (4%) | 2/62 (3%) | – |
| Turkey/Iraq | 1/6 (17%) | 3/76 (4%) | 0/62 (0%) | – |
| History of prior TB noted in preimmigration paperwork | 1/6 (17%) | 4/76 (5%) | 25/62 (40%) | < .001 |
| Days from entry to country to evaluation by BCHD | 105 (63–125) | 74 (53–98) | 76 (57–98) | .653 |
| Abnormal preimmigration chest X-ray | 5/6 (83%) | 40/76 (53%) | 55/62 (89%) | < .001 |
| Infiltrate or consolidation | 2/5 (40%) | 5/40 (13%) | 9/55 (16%) | – |
| Any cavitary lesion | 0/5 (0%) | 0/40 (0%) | 2/55 (4%) | – |
| Nodule with poorly defined margins | 0/5 (0%) | 0/40 (0%) | 2/55 (4%) | – |
| Pleural effusion | 0/5 (0%) | 0/40 (0%) | 0/55 (0%) | – |
| Hilar mediastinal adenopathy | 0/5 (0%) | 1/40 (3%) | 0/55 (0%) | – |
| Linear interstitial markings | 0/5 (0%) | 0/40 (0%) | 0/55 (0%) | – |
| Discrete fibrotic scar or linear opacity | 1/5 (20%) | 24/40 (60%) | 27/55 (49%) | – |
| Discrete nodule without calcification | 1/5 (20%) | 3/40 (8%) | 1/55 (2%) | – |
| Discrete fibrotic scar with volume loss or retraction | 1/5 (20%) | 4/40 (10%) | 3/55 (6%) | – |
| Other | 0/5 (0%) | 3/40 (8%) | 11/55 (20%) | – |
| Abnormal postimmigration chest X-ray | 5/6 (83%) | 23/75 (31%) | 31/62 (50%) | < .001 |
| Reported symptoms | 2/6 (33%) | 9/76 (12%) | 9/62 (15%) | – |
| Received sputa testing | 2/2 (100%) | 8/9 (89%) | 7/9 (78%) | – |
| Culture positive | 1/2 (50%) | 0/8 (0%) | 0/7 (0%) | – |
| Did not report symptoms | 4/6 (67%) | 67/76 (88%) | 53/62 (86%) | – |
| Received sputa testing | 4/4 (100%) | 17/67 (25%) | 21/53 (43%) | – |
| Culture positive | 2/4 (50%) | 0/17 (0%) | 0/21 (0%) | – |
| Completed treatment | 6/6 (100%) | 60/66 (91%) | – | – |
Note. BCHD = Baltimore City Health Department; IQR = interquartile range. P values presented in this table represent comparison between diagnosis categories for each variable. Patients received sputum testing on the basis of postimmigration chest X-ray, clinical history, or physical exam.