Table 1—

Characteristics of patients with bronchiectasis according to nontuberculous mycobacterial(NTM) lung disease

CharacteristicsWith NTM#Without NTMp-value+
Mean age yrs62.2±14.651.6±15.30.002
Underlying aetiology of bronchiectasis§
 Post-adult infection110
 Post-childhood infection28
 Rheumatoid arthritis21
 Primary ciliary dyskinesia37
 Diffuse pan-bronchiolitis02
 Allergic bronchopulmonary Aspergillosis43
 Yellow nail syndrome03
Pulmonary function tests
 FEV1 L1.6±0.82.0±0.80.02
 RV % pred147±35152±450.62
 TL,CO % pred67±2577±150.05
  • Data are presented as mean±sd or n. FEV1: forced expiratory volume in one second; RV: residual volume; % pred: % predicted; TL,CO: transfer factor of the lung for carbon monoxide. #: n = 30; : n = 61; +: univariate analysis using Chi-squared or Fisher's exact test for contingency tables and unpaired t-test for comparison of means; §: the most predominant aetiology reported; some patients had two aetiologies.