TABLE 1—
Description of All B Classification Patients Seen by the BCHD for TB, by Year: Baltimore, MD, 2010–2012
| Characteristic | 2010 (n = 36), No. (%) or Median (IQR) | 2011 (n = 67), No. (%) or Median (IQR) | 2012 (n = 50), No. (%) or Median (IQR) | Total (n = 153), No. (%) or Median (IQR) | P |
| Gender | |||||
| Female | 9/36 (25%) | 26/67 (39%) | 20/50 (40%) | 55/153 (34%) | |
| Male | 27/36 (75%) | 41/67 (61%) | 30/50 (60%) | 98/153 (64%) | |
| Age, y | 30 (15–51) | 42 (23–67) | 29 (14–47) | 33 (14–58) | .033 |
| 0–14 | 9/36 (25%) | 16/67 (24%) | 14/50 (28%) | 39/153 (26%) | |
| 15–24 | 6/36 (17%) | 3/67 (5%) | 7/50 (14%) | 16/153 (10%) | |
| 25–44 | 10/36 (28%) | 15/67 (22%) | 14/50 (28%) | 39/153 (26%) | |
| 45–64 | 7/36 (19%) | 14/67 (21%) | 10/50 (20%) | 31/153 (20%) | |
| ≥ 65 | 4/36 (11%) | 19/67 (28%) | 5/50 (10%) | 28/153 (18%) | |
| Country of origination/origina | |||||
| Other | 9/36 (25%) | 4/67 (6%) | 5/50 (10%) | 18/153 (12%) | |
| Nepal/Bhutan | 17/36 (47%) | 49/67 (73%) | 32/50 (64%) | 98/153 (64%) | |
| Philippines | 6/36 (17%) | 6/67 (9%) | 7/50 (14%) | 19/153 (12%) | |
| Ethiopia/Eritrea | 3/36 (8%) | 6/67 (9%) | 0/50 (0%) | 9/153 (6%) | |
| Dominican Republic | 1/36 (3%) | 1/67 (2%) | 3/50 (6%) | 5/153 (3%) | |
| Turkey/Iraq | 0/36 (0%) | 1/67 (1%) | 3/50 (6%) | 4/153 (3%) | |
| B classification | |||||
| B1 | 25/36 (69%) | 49/67 (73%) | 34/50 (68%) | 108/153 (71%) | |
| B2 | 11/36 (31%) | 17/67 (44%) | 15/50 (33%) | 43/153 (28%) | |
| B3 | 0/36 (0%) | 1/67 (1%) | 1/50 (2%) | 2/153 (1%) | |
| Abnormalities reported in preimmigration chest X-rayb | |||||
| Infiltrate or consolidation | 13/25 (52%) | 19/49 (39%) | 18/34 (53%) | 50/108 (46%) | |
| Any cavitary lesion | 2/25 (8%) | 3/49 (6%) | 2/34 (6%) | 7/108 (7%) | |
| Nodule with poorly defined margins | 1/25 (4%) | 4/49 (4%) | 2/34 (6%) | 7/108 (7%) | |
| Pleural effusion | 0/25 (0%) | 0/49 (0%) | 1/34 (3%) | 1/108 (1%) | |
| Hilar mediastinal adenopathy | 0/25 (0%) | 1/49 (2%) | 0/34 (0%) | 1/108 (1%) | |
| Linear interstitial markings | 1/25 (4%) | 0/49 (0%) | 1/34 (3%) | 2/108 (2%) | |
| Discrete fibrotic scar or linear opacity | 11/25 (44%) | 35/49 (71%) | 23/34 (68%) | 69/108 (64%) | |
| Discrete nodule without calcification | 1/25 (4%) | 2/49 (4%) | 1/34 (3%) | 4/108 (4%) | |
| Discrete fibrotic scar with volume loss or retraction | 2/25 (8%) | 4/39 (4%) | 3/34 (9%) | 9/108 (8%) | |
| Other | 5/25 (20%) | 15/39 (31%) | 9/34 (27%) | 29/108 (27%) | |
| History of prior TB noted in immigration paperwork | 6/36 (17%) | 15/67 (22%) | 11/50 (22%) | 32/153 (21%) | |
| Days from entry to evaluation by health department | 62 (53–77) | 93 (69–112) | 61 (45–80) | 75 (55–98) | < .001 |
| Days since last preimmigration chest X-ray | 194 (167–204) | 224 (196–258) | 182 (146–217) | 201 (169–241) | < .001 |
Note. BCHD = Baltimore City Health Department; IQR = interquartile range; TB = tuberculosis.
a
Patients commonly were screened and emigrated from a country of origination that was not their country of origin. For example, many patients who emigrated from Nepal were born and raised in Bhutan. Most patients who arrived from Ethiopia and Turkey were born and raised in Eritrea and Iraq, respectively.
b
Class B1 only. Percentages may sum to greater than 100 as patients frequently had more than 1 abnormality noted.