Health Issues of Primary School Students Residing in Proximity of an Oil Terminal with Environmental Exposure to Volatile Organic Compounds

Table 3

Days absent due to respiratory syndromes: estimation of mean ratios (MR) by tertiles of selected profiles through the negative binomial regression model.

	Sore throat			Cough			Cold
	Mean (SD)	MR (95% CI)	value trend	Mean (SD)	MR (95% CI)	value trend	Mean (SD)	MR (95% CI)	value trend
B0/E
<0.85	0.04 (0.27)	Ref.	0.090
0.85–1.01	0.16 (0.64)	5.0 (1.3–18.9)
>1.01	0.15 (0.61)	3.3 (0.9–12.2)
T0/E
<5.94				0.05 (0.31)	Ref.	0.821
5.94–7.12				0.20 (0.95)	4.8 (1.1–21.7)
>7.12				0.02 (0.13)	0.4 (0.1–2.6)
T5/E
<0.08	0.04 (0.27)	Ref.	0.016				0.06 (0.43)	Ref.	0.087
0.08–0.14	0.11 (0.49)	3.1 (0.8–11.8)					0.04 (0.31)	0.8 (0.2–3.4)
>0.14	0.19 (0.74)	4.9 (1.4–17.6)					0.18 (0.60)	5.4 (1.3–21.8)
T12/E
<0.06
0.06–0.11
>0.11
T24/E
<0.07	0.04 (0.27)	Ref.	0.002	0.05 (0.31)	Ref.	0.056	0.06 (0.43)	Ref.	0.092
0.07–0.18	0.06 (0.30)	1.6 (0.4–6.2)		0.02 (0.19)	0.3 (0.0–2.2)		0.02 (0.13)	0.3 (0.1–1.5)
>0.18	0.24 (0.82)	6.5 (1.9–21.8)		0.20 (0.94)	5.7 (1.2–26.9)		0.20 (0.65)	3.1 (1.1–9.2)
X0/E
<2.76							0.06 (0.43)	Ref.	0.114
2.76–2.79							0.05 (0.32)	1.0 (0.2–4.2)
>2.79							0.17 (0.59)	4.9 (1.2–20.0)
X1/E
<1.24	0.04 (0.27)	Ref.	0.269
1.24–1.26	0.21 (0.75)	6.4 (1.8–23.0)
>1.26	0.09 (0.48)	2.1 (0.5–8.0)
X14/E
<1.35	0.04 (0.26)	Ref.	0.003	0.01 (0.12)	Ref.	0.005	0.01 (0.12)	Ref.	0.001
1.35–2.95	0.06 (0.32)	1.8 (0.4–7.7)		0.07 (0.38)	4.5 (0.6–33.3)		0.08 (0.50)	5.8 (1.0–32.8)
>2.95	0.22 (0.78)	6.1 (1.7–21.2)		0.18 (0.88)	15.9 (2.2–115.1)		0.18 (0.62)	13.3 (2.5–69.6)
X22/E
<0.12	0.04 (0.27)	Ref.	0.002	0.05 (0.31)	Ref.	0.055
0.12–0.15	0.06 (0.30)	1.6 (0.4–6.2)		0.03 (0.21)	0.5 (0.1–3.0)
>0.15	0.24 (0.82)	6.5 (1.9–21.9)		0.19 (0.94)	5.1 (1.1–24.2)

Bold values indicate statistically significant.