Table 2. Descriptive characteristics of case-patients with invasive extrapulmonary NTM infections and control-patients among patients who underwent cardiothoracic surgery, York, Pennsylvania, USA, 2015*.

Characteristic	Case-patients, n = 11	Control-patients, n = 48	p value†
Demographics
Age, y, mean (range)	69 (47–84)	64 (20–84)	0.33
Male sex	9 (82)	27 (56)	0.17
White race	11 (100)	45 (94)	1.00
Predisposing medical condition
Chronic lung disease	4 (36)	8 (17)	0.21
COPD	1 (9)	8 (17)	1.00
Sarcoidosis	3 (27)	0	0.005
Diabetes	1 (9)	15 (31)	0.26
Immunocompromised	3 (27)	10 (21)	0.69
HIV	0	0	NA
Transplant	0	0	NA
Chemotherapy	2 (18)	9 (19)	1.00
Steroid treatment	0	2 (4)	1.00
Hematologic malignancy‡	2 (18)	1 (2)	0.09

*Values are no. (%) patients except as indicated. COPD, chronic obstructive pulmonary disease; NA, not applicable; NTM, nontuberculous mycobacteria.
†Fisher exact test for categorical variables or two 2-sample t tests with pooled variance.
‡Among cases, hematologic malignancy included chronic lymphocytic leukemia and myelodysplastic syndrome. Among controls, hematologic malignancy included Hodgkin’s lymphoma.