Elevated Natural Killer Cell-Mediated Cytotoxicity Is Associated with Cavity Formation in Pulmonary Tuberculosis Patients

Table 1

The characteristics of enrolled pulmonary TB patients with cavity or not and healthy uninfected donors.

Characteristics	TB patients with cavity or not		Health control	value
	Yes ()	No ()	()
Age (years, )				0.607
Sex
Male	52	34	11	0.028
Female	16	27	9
Ethic group
Han	64	55	20	0.292
Others	4	6	0
Treatment history
Primary treatment	38	38		0.460
Retreatment	30	23

SD: standard deviation. value was derived using the chi-square test.