Table 3.

Factors associated with TST conversion among health science students.

	Univariate		Multivariable
	IRR (IC95%)	p-Value	IRR (IC95%)	p-Value
Age
Under 18 years old	Reference		Reference
18 Years old	3.00 (2.31–3.87)	<0.01	2.97 (2.29–3.84)	<0.01
Between 18 and 21 years old	3.98 (3.14–5.04)	<0.01	3.92 (3.09–4.96)	<0.01
21 Years old or more	4.50 (3.57–5.66)	<0.01	4.00 (3.16–5.06)	<0.01
Male	0.95 (0.86–1.05)	0.34
Body mass index
Normal	Reference
Underweight	0.78 (0.61–0.99)	0.04
Overweight/obesity	1.17 (1.05–1.30)	<0.01
TB contact history	1.38 (1.13–1.68)	<0.01
Careers
Administration, science and education	Reference		Reference
Veterinary	1.32 (1.06–1.63)	0.01	1.23 (0.98–1.54)	0.07
Dentistry	1.31 (1.09–1.59)	<0.01	1.28 (1.05–1.54)	0.01
Nursing	1.80 (1.52–2.13)	<0.01	1.61 (1.35–1.92)	<0.01
Medical technology	1.73 (1.46–2.04)	<0.01	1.51 (1.27–1.78)	<0.01
Medicine	1.31 (1.11–1.54)	<0.01	1.14 (0.96–1.35)	0.15
Internship year	2.45 (2.09–2.87)	<0.01	1.94 (1.64–2.30)	<0.01