City descriptive data on the study period, population, exposure(nitrogen dioxide (NO2)) and outcome (daily number of deaths)
| City | Study period month/yr | Population×1000 | Mean number of deaths per day | NO2 1 h μg·m-3# | ||
| Total | CVD | Respiratory | ||||
| Athens | 01/1992–12/1996 | 3073 | 73 | 36 | 5 | 129.9 (84.3–187.0) |
| Barcelona | 01/1991–12/1996 | 1644 | 40 | 16 | 4 | 91.1 (63.2–124.7) |
| Basel | 01/1990–12/1995 | 360 | 9 | 4 | 1 | 65.9 (44.2–92.1) |
| Bilbao | 04/1992–03/1996 | 667 | 15 | 5 | 1 | 78.7 (58.1–101.6) |
| Birmingham | 01/1992–12/1996 | 2300 | 61 | 28 | 9 | 74.5 (49.3–99.5) |
| Budapest | 01/1992–12/1995 | 1931 | 80 | 40 | 3 | 131.9 (88.0–185.6) |
| Bucharest | 01/1992–12/1996 | 2100 | 71 | 38 | 4 | 50.5 (31.4–85.5) |
| Cracow | 01/1990–12/1996 | 746 | 18 | 10 | 0 | 79.4 (37.7–132.0)¶ |
| Erfurt | 01/1991–12/1995 | 216 | 6 | 76.0 (36.0–119.0) | ||
| Geneva | 01/1990–12/1995 | 317 | 6 | 2 | 0 | 79.2 (54.1–111.4) |
| Helsinki | 01/1993–12/1996 | 828 | 18 | 9 | 2 | 62.4 (40.4–87.0) |
| Ljubljana | 01/1992–12/1996 | 322 | 7 | 3 | 0 | 80.0 (47.5–115.0) |
| Lodz | 01/1990–12/1996 | 828 | 30 | 17 | 1 | 66.4 (40.1–96.4)¶ |
| London | 01/1992–12/1996 | 6905 | 169 | 71 | 29 | 94.8 (67.1–128.5) |
| Lyon | 01/1993–12/1997 | 416 | 9 | 3 | 1 | 107.2 (75.1–143.2) |
| Madrid | 01/1992–12/1995 | 3012 | 61 | 22 | 6 | 122.9 (83.7–174.7) |
| Marseille | 01/1990–12/1995 | 855 | 22 | 8 | 2 | 119.6 (80.9–163.1) |
| Milan | 01/1990–12/1996 | 1343 | 29 | 11 | 2 | 154.8 (104.7–217.8) |
| The Netherlands | 01/1990–09/1995 | 15400 | 342 | 140 | 29 | 53.1 (32.8–74.9) |
| Paris | 01/1991–12/1996 | 6700 | 124 | 38 | 9 | 84.0 (55.1–118.5) |
| Poznan | 01/1990–12/1996 | 582 | 17 | 9 | 1 | 81.1 (45.1–119.7)¶ |
| Prague | 02/1992–12/1996 | 1213 | 38 | 22 | 1 | 60.7 (37.7–86.5) |
| Rome | 01/1992–12/1996 | 2775 | 56 | 23 | 3 | 147.6 (111.6–189.2) |
| Stockholm | 01/1990–12/1996 | 1126 | 30 | 15 | 3 | 47.6 (31.2–64.2) |
| Tel Aviv | 01/1991–12/1996 | 1141 | 27 | 12 | 2 | 139.7 (57.5–254.9) |
| Teplice | 01/1990–12/1997 | 625 | 18 | 10 | 1 | 59.7 (40.9–81.7) |
| Torino | 01/1990–12/1996 | 926 | 21 | 9 | 1 | 132.4 (78.2–199.6) |
| Valencia | 01/1994–12/1996 | 753 | 16 | 6 | 2 | 116.5 (60.8–170.3) |
| Wroclaw | 01/1990–12/1996 | 643 | 15 | 9 | 1 | 46.2 (29.5–63.7)¶ |
| Zurich | 01/1990–12/1995 | 540 | 13 | 6 | 1 | 70.2 (46.9–97.4) |
CVD: cardiovascular disease. #: mean (10th–90th percentile); ¶: the maximum hourly NO2 concentration of each day was estimated as 1.64×NO2 24-h values.