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Table 3 Distribution of long-term air pollution exposures among women living in the Ruhr area and an adjacent rural area in Germany at baseline and at follow-up

From: Decline in air pollution and change in prevalence in respiratory symptoms and chronic obstructive pulmonary disease in elderly women

  Total Group (n = 2116)     
  Baseline in
1985-1994
Follow-up in
2006
Change in
rural area
Change in urban area
  PM 10 No 2 PM 10 NO 2 PM 10 NO 2 PM 10 NO 2
Min 38.9 22.0 25.0 20.2 13.9 1.8 14.8 8.6
25 Percentile 42.6 24.4 25.0 20.2 14.3 2.6 16.2 13.4
Median 46.9 39.8 26.0 31.2 14.3 4.2 23.1 16.4
Mean 46.6 38.1 26.9 27.9 17.6 3.8 21.4 15.4
75 Percentile 52.1 49.8 28.4 32.8 21.9 4.8 24.6 17.2
Max 53.6 61.0 30. 5 44.6 24.0 6.3 25.2 21.2