Table 1.

Demographic and baseline clinical characteristics of pulmonary tuberculosis patients.

Total, n		727
Age, median, range		63	15–97
Female, n, %		208	28.8
Nationality (other than Japanese), n, %		9	1.2
Sputum smear statusa, n, %	0	167	23.0
	1+	187	25.7
	2+	113	15.5
	3+	252	34.7
	unknown	7	1.0
Lung cavitary lesion, n (%)		276	38.0
Underlying preexisting conditionsb, n, %
Administration of immunosuppressant before TB onsetc		39	5.4
Malignant diseases		44	6.1
Serum albumin less than 3.0 g/dL		248	34.1
Bedridden		78	10.7
Diabetes mellitus		69	9.5
HIV positive		8	1.1
Liver cirrhosis		5	0.7
Renal failure		5	0.7
History of cerebral infarction		17	2.3
Silicosis		3	0.4
Dementia		45	6.2
Alcoholism		15	2.1
Homeless		34	4.7
Drug abuser		0	0.0

Note. ^aSmear by sputum microscopy: 0 (no acid fast bacilli (AFB) on smear), 1+ (1–99 AFB per 100 field), 2+ (1–10 AFB per field), and 3+ (more than 10 AFB per field).

^bMore than one condition can coexist in the same patient.

^cIncluding chronic systemic steroids, antitumor necrosis alpha agents and immunosuppressive agents.