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Table 2 Descriptive data on air pollutants among intracranial CNS tumor cases and controls in Denmark, 1989–2014

From: Intracranial tumors of the central nervous system and air pollution – a nationwide case-control study from Denmark

10 year time-weighted mean exposure min 1st pctl 5th pctl 10th pctl 25th pctl median 75th pctl 90th pctl 95th pctl 99th pctl max Inter quartile range
BC (μg/m3)
 Controls 0.29 0.37 0.43 0.47 0.55 0.72 0.94 1.21 1.49 2.42 8.00 0.39
 Cases 0.29 0.38 0.43 0.47 0.56 0.73 0.94 1.21 1.50 2.43 13.64 0.38
PM2.5(μg/m3)
 Controls 9.91 11.83 12.81 13.41 14.67 16.87 20.07 22.45 23.53 26.30 37.09 5.39
 Cases 9.93 11.82 12.83 13.40 14.63 16.76 19.95 22.43 23.52 26.06 41.46 5.31
NO2(μg/m3)
 Controls 5.68 8.12 10.35 11.79 14.57 25.35 19.18 31.06 35.72 48.33 73.86 10.78
 Cases 5.66 8.20 10.39 11.85 14.79 25.60 19.35 31.22 35.74 48.26 79.00 10.81
NOx(μg/m3)
 Controls 6.13 8.84 11.42 13.17 17.06 24.83 35.92 51.01 67.33 116.69 270.31 18.86
 Cases 6.15 8.93 11.48 13.26 17.34 25.15 36.35 51.35 67.22 115.37 330.91 19.01
O3(μg/m3)
 Controls 15.82 37.5 47.04 50.70 55.58 60.92 65.30 68.44 70.26 73.81 77.45 9.72
 Cases 15.72 37.05 47.08 50.63 55.43 60.78 65.12 68.38 70.33 73.56 77.68 9.69