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

Table 3

Level of xylene and toluene exposure in work environment (ppm) and urinary metabolite (mg/gram creatinine) in non-exposed and exposed group.

	Nonexposed group				Exposed group
	Xylene	Toluene	Methyl hippuric acid	Hippuric acid	Xylene	Toluene	Methyl hippuric acid	Hippuric acid
	(nondetectable = 51%)	(nondetectable = 51%)	(nondetectable = 71%)	(nondetectable = 34%)			(nondetectable = 19%)	(nondetectable = 33%)
Means	0.3	0.5	51.2	202.2	2.7	9.5	78.3	575.2
Standard deviation	0.0	0.8	72.5	188.7	2.4	10.4	74.7	566.9
Median	0.3	0.3	30.3	166.5	1.9	4.9	50.8	423.5
Minimum	0.3	0.1	4.7	1.0	0.1	0.5	0.3	5.5
Maximum	0.4	5.1	297.6	1066.1	13.1	48.7	331.7	2626.9