TABLE 1

Demographic and clinical features by pulmonary tuberculosis (TB) diagnosis status and smear status

	Culture-positive	Culture-negative	p-value	Smear-positive	All others	p-value
Subjects	170	221		74	317
Age years	46.2±21.0	44.6±16.3	0.42	45.4±21.2	45.3±17.8	0.97
Male	90 (52.9)	111 (50.2)	0.59	41 (55.4)	160 (50.4)	0.44
Clinical characteristics mean score^#
Symptoms	2.7±1.14	1.1±0.58	<0.001	3.3±0.87	1.4±0.92	<0.001
Duration of symptoms	3.0±1.24	1.1±0.72	<0.001	3.5±0.89	1.6±1.2	<0.001
Absence of dyspnoea	3.7±0.60	3.9±0.22	<0.001	3.6±0.64	3.9±0.37	<0.001
Antibiotic use	1.9±1.20	1.1±0.53	<0.001	2.4±1.2	1.2±0.75	<0.001
Epidemiological risk of acquiring Mycobacterium tuberculosis infection	2.5±0.68	2.8±0.92	0.007	2.3±0.54	2.7±0.87	0.002
Risk factors for reactivation of LTBI	1.4±0.82	1.1±0.51	<0.001	1.5±0.74	1.1±0.66	<0.001
Complete blood count	2.9±0.99	2.1±0.64	<0.001	3.1±1.01	2.3±0.82	<0.001

Data are presented as n, mean±sd or n (%), unless otherwise stated. LTBI: latent TB infection. ^#: refers to the mean of the score, ranging from 1 to 4, characterising the association between the predictor and outcome from clinical experience.