Table 2.

Bivariate and multivariate logistic regression analysis of factors influencing exposure to BBF.

Variable	Frequency	No exposure	Exposure	pvalue	COR	p value	AOR
	n = 178 (100.0%)	n = 88 (49.4%)	n = 90 (50.6%)		OR (95% CI)		OR (95% CI)
Gender
Female	39 (21.9)	19 (48.7)	20 (51.3)	0.919	1.00		1.00
Male	139 (78.1)	69 (49.6)	70 (50.4)		0.96 (0.47–1.96)	0.779	1.12 (0.49–2.56)
Age in years
15–19	14 (7.9)	9 (64.3)	5 (35.7)		1.00		1.00
20–24	118 (66.3)	54 (45.8)	64 (54.2)	0.197	2.13 (0.67–6.75)	0.528	1.52 (0.41–5.58)
25–29	31 (17.4)	18 (58.1)	13 (41.9)	0.694	1.30 (0.35–4.80)	0.479	0.55 (0.11–2.83)
>29	15 (8.4)	7 (46.7)	8 (53.3)	0.343	2.06 (0.46–9.14)	0.294	0.27 (0.02–3.12)
Year group
2nd year	91 (51.1)	47 (51.7)	44 (48.3)		1.00		1.00
3rd year	64 (36.0)	31 (48.4)	33 (51.6)	0.694	1.14 (0.60–2.16)	0.392	0.65 (0.24–1.74)
4th year	23 (12.9)	10 (43.5)	13 (56.5)	0.485	1.39 (0.55–3.49)	0.292	2.10 (0.53–8.40)
Work history
Never worked	155 (87.1)	79 (51.0)	76 (49.0)		1.00		1.00
Ever worked	23 (12.9)	9 (39.1)	14 (60.9)	0.292	1.62 (0.66–3.96)	0.029∗	7.37 (1.22–44.43)
Vocational
<2 months	105 (59.0)	57 (54.3)	48 (45.7)		1.00		1.00
3–4 months	52 (29.2)	20 (38.5)	32 (61.5)	0.063	1.90 (0.96–3.74)	0.073	2.45 (0.92–6.58)
5–6 months	15 (8.4)	8 (53.3)	7 (46.7)	0.945	1.03 (0.35–3.07)	0.303	0.44 (0.10–2.06)
>6 months	6 (3.4)	3 (50.0)	3 (50.0)	0.838	1.18 (0.23–6.16)	0.945	1.08 (0.14–8.45)
Vaccinated
No	101 (56.74)	51 (50.5)	50 (49.5)		1.00		1.00
Yes	77 (43.26)	37 (48.1)	40 (51.9)	0.747	1.10 (0.60–2.00)	0.932	1.02 (0.53–2.00)
Training on ID
No	85 (51.98)	39 (45.9)	46 (54.1)		1.00		1.00
Yes	93 (52.25)	49 (52.7)	44 (47.3)	0.365	0.76 (0.42–1.37)	0.689	0.88 (0.46–1.68)
Sufficient PPE
No	46 (25.8)	16 (34.8)	30 (65.2)		1.00		1.00
Yes	132 (74.2)	72 (54.5)	60 (45.5)	0.02∗	0.44 (0.22–0.89)	0.023∗	0.41 (0.20–0.88)

p values denoted by ^∗ are significant at<0.05.