Table 2.

Baseline characteristics of patients with nontuberculous mycobacteria with culture conversion

Baseline Patient Characteristics	Met Case Criteria*		Did Not Meet Case Criteria
	Microbiology during Follow-Up	Culture Conversion	Microbiology during Follow-Up	Culture Conversion
Total	49	29 (59.2)	22	9 (40.9)
Mycobacterium avium complex	40	24 (60.0)	16	6 (35.3)
Mycobacterium abscessus/chelonae complex	6	3 (50.0)	2	2 (100.0)
Other (includes unspeciated)	3	2 (66.7)	3	1 (33.3)
Treated	39	25 (64.1)	5	3 (60.0)
Not treated	10	4 (40.0)	17	6 (35.3)
Cavitation	12	8 (66.7)	2	1 (50.0)
No cavitation	37	21 (56.8)	20	8 (40.0)
Age ≥67 yr	22	10 (45.5)	15	3 (20.0)
Age <67 yr	27	19 (70.4)	7	6 (85.7)
Women	38	21 (55.3)	12	5 (41.7)
Men	11	8 (72.7)	10	4 (40.0)
COPD	19	12 (63.2)	12	5 (41.7)
No COPD	30	17 (56.7)	10	4 (40.0)
Bronchiectasis†	43	26 (60.5)	14	5 (35.7)
No bronchiectasis	6	3 (50.0)	8	4 (50.0)
Any steroid use‡	10	4 (40.0)	7	4 (31.8)
No steroid use	39	25 (64.1)	15	5 (33.3)

Definition of abbreviations: COPD = chronic obstructive pulmonary disease.

Numbers are count (percent) except as noted. Boldface type indicates P < 0.05. P value comparisons are comparing characteristics of patients with and without culture conversion by chi square or Fisher’s exact within case criteria group.

^*American Thoracic Society/Infectious Disease Society of America pulmonary disease criteria (4).

^†Bronchiectasis noted on computed tomographic scan report or physician diagnosis recorded.

^‡Use of inhaled corticosteroids or oral prednisone.