Table 1.

Job and house characteristics of volunteers (n = 50) andcorresponding annual (median) toluene and xylene measurements ( μg/m³)

			Toluene ( μg/m3)		Xylene ( μg/m3)
	n	%	Personal	House	Personal	House
Transportation means
By foot	7	14	46.0		52.4
By foot and vehicle	35	70	56.0		55.9
By vehicle	8	16	71.6b		74.9b
Use of vehicle in work
Yes	28	56	72.5b		75.9b
No	22	44	52.0		55.4
Smoker room-mate
Yes	15	30	64.0	40.2	65.9	42.3
No	35	70	63.0	38.5	67.7	35.8
City area
Center	42	84	64.0	39.8a	67.7	38.9a
Suburbs	8	16	55.2	26.5	65.3	23.2
Proximity to gasoline station
Yes (< 50 m)	3	6	91.9a	60.9	98.1a	52.0a
No	47	94	61.7	38.1	65.9	35.2
Proximity to busy road
Yes (< 50 m)	16	32	65.5	42.0a	67.2	46.0a
No	34	68	63.0	37.1	67.4	33.8

Significant differences, ^a P < 0.05, ^b P < 0.01