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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Am J Public Health. 2015 Jan 20;105(7):1432–1438. doi: 10.2105/AJPH.2014.302287

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.