Table 4. Comparison of patients with NTM infection and NTM disease according to 1997 and 2007 ATS criteria*.
| Parameter | 1997 criteria |
2007 criteria |
|||||
|---|---|---|---|---|---|---|---|
| NTM disease (n = 12) | NTM infection (n = 30) | p value | NTM disease (n = 20) | NTM infection (n = 22) | p value | ||
| Age, y (mean ± SD) | 19.8 ± 9.1 | 26.0 ± 11.2 | 0.17 | 24.2 ± 11.7 | 24.3 ± 10.4 | 0.97 | |
| Sex, F/M | 7/5 | 11/19 | 0.20 | 9/11 | 9/13 | 0.79 | |
| No. sputum specimens (mean ± SD) | 9.0 ± 5.1 | 4.4 ± 4.0 | 0.01 | 8.0 ± 5.2 | 3.6 ± 3.2 | 0.003 | |
| BMI, kg/m2 (mean ± SD) | 18.9 ± 1.4 | 20.4 ± 4.0 | 0.19 | 19.7 ± 2.6 | 20.2 ± 4.1 | 0.63 | |
| Hemoptysis | 4 | 6 | 0.36 | 6 | 4 | 0.37 | |
| FEV1, L/s (mean ± SD) | 55.0 ± 23.0 | 57.4 ± 18.4 | 0.75 | 50.7 ± 20.3 | 62.1 ± 17.6 | 0.06 | |
| Pancreatic insufficiency | 9 | 26 | 0.36 | 17 | 18 | 0.78 | |
| Sweat chloride (Meq/L) (mean ± SD) | 66.5 ± 53.3 | 75.7 ± 49.6 | 0.61 | 81.9 ± 45.6 | 65.0 ± 53.7 | 0.28 | |
| Hospitalization, d (mean ± SD) | 50.8 ± 52.5 | 26.2 ± 27.7 | 0.05 | 43.9 ± 44.1 | 23.6 ± 28.0 | 0.09 | |
| Administration of antimicrobial drug therapy, d (mean ± SD) | 87.8 ± 110.9 | 34.7 ± 57.1 | 0.14 | 70.1 ± 90.6 | 31.5 ± 62.7 | 0.12 | |
| Azithromycin | 10 | 20 | 0.55 | 15 | 15 | 0.63 | |
| Azithromycin treatment, d (mean ± SD) | 379.5 ± 258.6 | 362.9 ± 322.7 | 0.87 | 360.7 ± 297.5 | 374.0 ± 314.2 | 0.89 | |
| Ibuprofen | 4 | 1 | 0.01 | 4 | 1 | 0.12 | |
| Insulin | 1 | 3 | 0.87 | 2 | 2 | 0.92 | |
| Systemic steroids | 2 | 1 | 0.13 | 2 | 1 | 0.49 | |
| Inhaled steroids | 10 | 16 | 0.07 | 16 | 10 | 0.02 | |
| AFB in sputum | 7 | 4 | 0.01 | 8 | 3 | 0.05 | |
| Pseudomonas aeruginosa | 12 | 28 | 0.36 | 20 | 20 | 0.17 | |
| Staphylococcus aureus | 7 | 11 | 0.2 | 8 | 10 | 0.72 | |
| Aspergillus spp. | 11 | 17 | 0.03 | 16 | 12 | 0.12 | |
| Allergic bronchopulmonary aspergillosis | 3 | 0 | 0.004 | 3 | 0 | 0.06 | |
| Hemophillus influenza | 2 | 1 | 0.14 | 2 | 1 | 0.52 | |
| Klebsiella pneumoniae | 1 | 2 | 0.85 | 2 | 1 | 0.55 | |
| Stenotrophomonas maltophilia | 2 | 0 | 0.02 | 2 | 0 | 0.14 | |
*NTM, nontuberculous mycobacteria; ATS, American Thoracic Society; SD, standard deviation; BMI, body mass index; FEV1, forced expiratory volume in 1 s; AFB, acid-fast bacilli.