Table 4.

Characteristics of the COPD patients selected under scenario 5 at index date

	Not developing TB (N = 22,920)	Developing TB (N = 674)	p value
Age (years)	54.2 ± 23.1	65.9 ± 11.4	<0.001*
Follow-up duration (years)	8.6 ± 2.5	4.6 ± 2.6	<0.001*
Male	14,110 (61.6)	525 (77.9)	<0.001#
Diabetes mellitus	1,566 (6.8)	55 (8.2)	0.179#
Malignancy	341 (1.5)	8 (1.2)	0.524#
lung cancer	36 (0.2)	1 (0.1)	>0.999‡
other cancer	305 (1.3)	7 (1.0)	0.513#
Autoimmune disease	68 (0.3)	2 (0.5)	>0.999‡
End-stage renal disease	35 (0.2)	2 (0.3)	0.285‡
Liver cirrhosis	8 (0.0)	0 (0)	>0.999‡
Pneumoconiosis	2 (0.0)	0 (0)	>0.999‡
Transplantation	4 (0.0)	0 (0)	>0.999‡
HIV/AIDS	0 (0)	0 (0)
Low income	335 (1.5)	11 (1.6)	0.717#

HIV: human immunodeficiency virus, AIDS: acquired immunodeficiency syndrome; TB: tuberculosis;

Data are shown as mean ± SD or No. (%) unless otherwise indicated.

* calculated by the independent-samples t test.

^# calculated by the chi-square test.

^‡ calculated by Fisher’s exact test.