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. 2021 Aug 12;7(8):e07775. doi: 10.1016/j.heliyon.2021.e07775

Table 6.

uHA concentration based on toluene exposure symptoms.

Effect	Symptoms	Mean uHA (mg/g creatinine)
Effect	Symptoms	No (n)	Yes (n)
Chronic	Tiredness	415.66 (18)	428.78 (12)^∗
	Insomnia	409.94 (15)	431.88 (15)^∗
	Loss of smell	408.37 (28)	596.54 (2)^∗
	Difficult to concentrate	432.40 (21)	291.87 (9)
Acute	Headache	428.01 (15)	413.81 (15)
	Eye irritation	389.80 (26)	623.15 (4)^∗
	Nausea	433.30 (26)	340.38 (4)
	Loss of appetite	444.80 (24)	325.34 (6)
	Respiratory irritation	430.29 (22)	395.11 (8)

^∗

uHA with symptom is higher than without symptom.