Table 2.

Determinants associated with correct answers, estimated by univariable analysis

Correct answers	Increasing age	Gender	To be a medical student	Previous TST
TB is an infectious disease caused by various strains of Mycobacteria genus, mainly M. tuberculosis	OR = 1.05	OR = 0.91	OR = 3.16	OR = 0.49
	95% CI = 0.98-1.12	95% CI = 0.62-1.36	95% CI = 3.28-17.1	95% CI = 0.31-0.77
	p = 0.12	p = 0.67	p < 0.0001	p = 0.002
TB does not affect only the lungs	OR = 1.09	OR = 1.15	OR = 2.44	OR = 0.41
	95% CI = 1.05-1.13	95% CI = 0.93-1.42	95% CI = 7.46-17.33	95% CI = 0.33-0.52
	p < 0.0001	p = 0.178	p < 0.0001	p < 0.0001
The most frequent outcome of the M. tuberculosis infection is the latent TB infection	OR = 1.11	OR = 1.27	OR = 4.36	OR = 0.79
	95% CI = 1.08-1.15	95% CI = 1.06-1.52	95% CI = 3.47-5.50	95% CI = 0.66-0.95
	p < 0.0001	p = 0.011	p < 0.0001	p = 0.013
Most of 50% of patients affected by active tuberculosis died	OR = 1.00	OR = 0.86	OR = 0.76	OR = 0.97
	95% CI = 0.98-1.02	95% CI = 0.71-1-03	95% CI = 0.63-0.93	95% CI = 0.81-1.17
	p = 0.92	p = 0.108	p = 0.007	p = 0.77
The treatment of the tuberculosis need the long-time use of antibiotics	OR = 1.13	OR = 1.46	OR = 5.87	OR = 0.40
	95% CI = 1.09-1.18	95% CI = 1.18-1.80	95% CI = 4.24-8.12	95% CI = 0.32-0.51
	p < 0.0001	p < 0.0001	p < 0.0001	p < 0.0001
The multidrug resistence of some strains of M. tuberculosis is an emergent concern	OR = 1.05	OR = 1.21	OR = 4.04	OR = 0.49
	95% CI = 1.01-1.08	95% CI = 0.97-1.50	95% CI = 2.96-5.51	95% CI = 0.39-0.62
	p = 0.005	p = 0.088	p < 0.0001	p < 0.0001
A vaccine against tuberculosis is available	OR = 1.00	OR = 1.04	OR = 1.50	OR = 1.20
	95% CI = 0.97-1.04	95% CI = 0.79-1.35	95% CI = 1.10-2.03	95% CI = 0.92-1.56
	p = 0.78	p = 0.79	p = 0.009	p = 0.171
The effectiveness of anti-tuberculosis vaccine is quite low	OR = 1.04	OR = 1.19	OR = 2.91	OR = 0.52
	95% CI = 1.01-1.06	95% CI = 0.98-1.43	95% CI = 2.31-3.66	95% CI = 0.43-0.63
	p = 0.007	p = 0.078	p < 0.0001	p < 0.0001
The TB vaccine is prepared with the Bacillus Calmette-Guérin	OR = 1.07	OR = 1.47	OR = 5.59	OR = 0.62
	95% CI = 1.94-1.09	95% CI = 1-24-1.77	95% CI = 4.54-6.89	95% CI = 0.52-0.75
	p < 0.0001	p < 0.0001	p < 0.0001	p < 0.0001
TST is not a vaccine	OR = 1.04	OR = 1.09	OR = 1.44	OR = 1.42
	95% CI = 1.01-1.09	95% CI = 0.82-1.42	95% CI = 1.06-1.96	95% CI = 1.09-1.85
	p = 0.04	p = 0.558	p = 0.021	p = 0.009
TST is not a laboratory test to detect M. tuberculosis in the sputum	OR = 1.07	OR = 1.14	OR = 4.32	OR = 0.66
	95% CI = 1.04-1.10	95% CI = 0.94-1.38	95% CI = 3.32-5.60	95% CI = 0.54-0.80
	p < 0.0001	p = 0.189	p < 0.0001	p < 0.0001
TST is not a drug for M. tuberculosis infection	OR = 1.05	OR = 1.22	OR = 4.05	OR = 0.71
	95% CI = 1.03-1.08	95% CI = 1.02-1.45	95% CI = 3.39-4.99	95% CI = 0.59-0.85
	p < 0.0001	p = 0.028	p < 0.0001	p < 0.0001