Research Article

Neuropsychological Symptoms among Workers Exposed to Toluene and Xylene in Two Paint Manufacturing Factories in Eastern Thailand

Table 5

Factors affecting neuropsychological symptoms among workers exposed to xylene and toluene.

VariablesXylene exposed groupVariablesToluene exposed group
Psychosomatic symptomsSleep disturbancesPsychosomatic symptomsMood symptomsTirednessSleep disturbances
aOR (95% CI)aOR (95% CI)aOR (95% CI)aOR (95% CI)aOR (95% CI)aOR (95% CI)

GenderGender
 Female0.3 (0.1–1.1)1.37 (0.4–4.9) Female0.4 (0.1–1.3)1.17 (0.3–4.7)0.9 (0.3–3.5)1.5 (0.4–5.6)
AgeAge
 25–292.4 (0.4–14.2)3.3 (0.5–20.3) 25–292.18 (0.4–13.1)4.14 (0.4–41.3)1.9 (0.3–12.7)3.8 (0.6–22.8)
 30–343.4 (0.6–19.6)0.9 (0.2–5.7) 30–342.8 (0.5–16.5)3.4 (0.4–28.7)0.9 (0.2–5.6)1.1 (0.2–6.3)
 35–395.47 (0.8–36.7)2.9 (0.5–18.6) 35–394.2 (0.6–27.5)6.1 (0.7–57.0)1.3 (0.2–8.6)2.5 (0.4–15.3)
 >409.5 (13.2–68.8)1.7 (0.3–11.9) >408.3 (1.2–58.5)3.1 (0.3–31.3)0.7 (0.1–5.1)1.4 (0.2–9.2)
Drinking historyDrinking history
 Ex-drinker1.1 (0.20–5.6) Ex-drinker0 (0.0)0.6 (0.10–4.2)1.4 (0.2–7.7)0.9 (0.2–5.4)
 Current drinker0.9 (0.3–3.0)1.4 (0.4–4.9) Current drinker1.0 (0.3–3.3)0.5 (0.1–1.9)1.4 (0.4–4.9)1.5 (0.4–5.2)
Work duration (yr)Work duration (yr)
 1–5 0.8 (0.1–4.1)1.2 (0.2–6.6) 1–5 0.7 (0.1–3.8)0.3 (0.1–1.6)1.01 (0.2–5.5)0.9 (0.2–4.4)
 >5 0.2 (0.02–0.9)1.04 (0.2–6.7) >5 0.1 (0.02–0.9)0.1 (0.02–0.9)0.9 (0.2–5.9)0.7 (0.1–4.0)
Xylene (ppm)Toluene (ppm)
 0.33–6.660.5 (0.2–1.8)2.4 (0.7–7.9) 15.2–30.30.3 (0.1–1.2)0.3 (0.05–1.9)0.2 (0.03–0.9)0.7 (0.2–2.3)
 >6.660.3 (0.04–2.4)2.51 (0.4–16.4) >30.331.07 (0.1–12.5)1.20 (0.1–13.5)4.6 (0.4–49.5)
Personal protective equipmentPersonal protective
 No2.1 (0.6–7.2)3.9 (1.1–13.8) No2.2 (0.6–7.8)1.6 (0.4–5.9)1.8 (0.5–6.2)4.4 (1.2–15.8)

Note. (1) The reference group for each factor was gender (male); age (19–24 yrs); drinking history (never drink); work duration (<1 yr); xylene (<0.3 ppm); personal protective equipment (yes).
(2) The reference group for each factor was gender (male); age (19–24 yrs); drinking history (never drink); work duration (<1 yr); toluene (<15.23 ppm); personal protective equipment (yes).