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Table 2 Features of patients with pulmonary M. tuberculosis and nontuberculous mycobacteria infection.

From: Mycobacterial infections in a large Virginia hospital, 2001-2009

Characteristic

Total

n = 363 (%)

NTM

n = 342 (%)

TB

n = 21 (%)

P value

Age (mean yrs) [SE mean]

Age≥60 yrs

57.2 [1.0]

186 (51)

57.6 [0.9]

176 (51)

50.0 [5.5]

10 (48)

p = 0.19

p = 0.73

Gender: Male

181 (49)

171 (50)

10 (48)

p = 0.83

Immigrant

17 (5)

3 (1)

14 (67)

p < 0.001

Predisposing risk factor for NTM**

261 (72)

252 (75)

9 (43)

p = 0.002

CT scan

    

Cavities

36 (14)

31 (13)

5 (38)

p = 0.01

Bronchiectasis

58 (24)

56 (24)

2 (15)

p = 0.74

Nodules

111 (45)

103 (45)

8 (61)

p = 0.23

Effusion

15 (6)

11 (5)

8 (61)

p = 0.005

  1. *Note total number of pulmonary patients (n = 363) is lower than total number of lung infections (n = 394) because of mixed infections.
  2. **Predisposing risk factors for NTM = pre-existing lung disease (COPD, Cystic fibrosis, asthma, alpha-1-antitrypsin, interstitial lung disease, pulmonary alveolar proteinosis, pulmonary fibrosis, sarcoidosis, and silicosis) or host predisposition (diabetes, end-stage renal disease, collagen vascular disease, cancer, HIV, transplantation).
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BMC Infectious Diseases

ISSN: 1471-2334

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