Risk factors, clinical and radiological characteristics of lung infections by nontuberculous mycobacteria, overall and in each decade
| Total | 1st decade# | 2nd decade¶ | p-value | |
| Risk factors | ||||
| HIV | 12.2% | 13.2% | 8.6% | 0.200 |
| Smoking | 53.6% | 60.4% | 44.8% | 0.003 |
| History of lung disease | 56% | 53% | 60.6% | 0.201 |
| COPD | 30.1% | 34% | 23.8% | 0.113 |
| Oral corticosteroid use | 6.7% | 8.2% | 4.5% | 0.283 |
| Alcohol use | 18.3% | 20.2% | 15.4% | 0.285 |
| Liver disease | 10.1% | 9.5% | 11.1% | 0.468 |
| Cancer | 22.6% | 23.8% | 20.6% | 0.395 |
| Gastroesophageal reflux | 9.6% | 11.5% | 6.6% | 0.233 |
| Signs and symptoms | ||||
| Cough/expectoration | 73.2% | 75.3% | 70.3% | 0.308 |
| Fever | 40.4% | 42.5% | 37.3% | 0.323 |
| Asthenia | 38% | 36.1% | 40.7% | 0.354 |
| Weight loss | 24.1% | 23.8% | 24.6% | 0.484 |
| Haemoptysis | 25.7% | 25% | 26.7% | 0.484 |
| Radiological findings | ||||
| Cavitation | 37.9% | 41.9% | 32.8% | 0.165 |
| Bronchiectasis | 29.3% | 22.6% | 38.1% | 0.032 |
| Nodules | 28.4% | 20.2% | 39.1% | 0.010 |
| Tree-in-bud pattern | 25.7% | 15.7% | 39.3% | 0.001 |
| Lung involvement | ||||
| Unilateral | 45.7% | 49.4% | 40.9% | 0.547 |
| Upper lung lobes | 52.4% | 58.8% | 43.3% | 0.260 |
| Middle lung lobes | 15.2% | 11.8% | 20% | 0.260 |
| Lower lung lobes | 15.2% | 9.4% | 6.7% | 0.260 |
| Multifocal | 22.1% | 18.8% | 26.7% | 0.260 |
#: 1997–2006; ¶: 2007–2016.