Table 1.
Baseline characteristics of study patients at diagnosis.
| Characteristics | Mabc (n = 31) | Mmass (n = 22) | P-value |
|---|---|---|---|
| Age, year | 59 (± 2) | 55 (± 2) | 0.187 |
| Female | 22 (71) | 16 (73) | 0.889 |
| Body mass index, kg/m2 | 20.3 (± 0.4) | 20.9 (± 0.4) | 0.367 |
| Never smoker | 25 (81) | 19 (86) | 0.585 |
| Underlying conditions | |||
| Bronchiectasis | 28 (90) | 20 (91) | 0.943 |
| Previous pulmonary tuberculosis | 11 (36) | 8 (36) | 0.948 |
| Chronic obstructive pulmonary disease | 4 (13) | 1 (5) | 0.389 |
| Diabetes mellitus | 2 (7) | 0 (0) | 0.505 |
| Sinusitis | 0 (0) | 1 (5) | 0.415 |
| Symptoms | |||
| Cough | 20 (65) | 15 (68) | 0.781 |
| Sputum | 25 (81) | 17 (77) | 0.765 |
| Hemoptysis | 7 (23) | 10 (46) | 0.079 |
| Type of disease | 0.229 | ||
| Noncavitary nodular bronchiectatic | 25 (80) | 13 (58) | |
| Cavitary nodular bronchiectatic | 4 (13) | 6 (28) | |
| Fibrocavitary | 2 (7) | 3 (14) | |
| Erythrocyte sedimentation rate, mm/h | 33 (±4) | 31 (±6) | 0.417 |
| C-reactive protein, mg/dl | 0.47 (±0.16) | 0.57 (±0.25) | 0.657 |
| Albumin, g/dl | 4.3 (±0.1) | 4.2 (±0.10) | 0.355 |
| Sputum smear positivity | 15 (48) | 8 (36) | 0.415 |
Data are presented as the mean (± standard error of the mean) or numbers (%). Mabc = M. abscessus subsp. abscessus, Mmass = M. abscessus subsp. massiliense.