Table 1

 Summary statistics for infant mortality and air pollution data between 1990 and 2000

CityTotal infant deathsNeonatal, %Mean daily pollution concentrations (25th, 75th centiles) (μg/m3)
CO (mg/m3)NONO2O3PM10SO2
CO, carbon monoxide; NO, nitrogen oxide; NO2, nitrogen dioxide; O3, ozone; PM10, particulate matter <10 μg/m3; SO2, sulphur dioxide.
Birmingham235471.40.64 (0.4, 0.8)24.3 (7, 27)43.0 (29, 55)33.5 (20, 45)21.9 (14, 26)17.5 (7, 22)
Bristol64464.31.01 (0.6, 1.2)47.9 (18, 55)66.3 (50, 78)23.8 (12, 33)23.1 (15, 28)17.8 (7, 21)
Leeds202762.10.73 (0.5, 0.9)41.5 (18, 49)48.0 (37, 58)30.2 (19, 40)24.0 (15, 28)17.0 (6, 21)
Liverpool105062.60.51 (0.3, 0.6)37.7 (14, 49)43.9 (30, 56)34.8 (21, 47)23.6 (15, 28)21.3 (6, 28)
London903766.10.77 (0.5, 0.9)48.0 (22, 57)66.1 (54, 75)20.5 (10, 28)26.3 (18, 31)21.3 (9, 27)
Manchester340463.20.63 (0.4, 0.7)36.3 (12, 40)49.0 (35, 58)25.0 (14, 33)22.6 (15, 27)15.1 (9, 18)
Middlesbrough57462.90.37 (0.2, 0.4)11.1 (4, 11)28.3 (18, 37)42.6 (31, 54)18.4 (11, 22)11.4 (4, 15)
Newcastle98666.60.67 (0.5, 0.8)33.7 (14, 41)41.0 (29, 52)35.6 (23, 47)21.5 (14, 26)14.9 (7, 18)
Nottingham96367.30.62 (0.4, 0.7)28.5 (11, 32)45.1 (35, 54)28.1 (17, 37)20.7 (14, 24)16.0 (10, 19)
Sheffield124967.70.60 (0.3, 0.7)60.1 (23, 74)51.0 (38, 62)34.5 (23, 45)23.0 (15, 28)16.5 (7, 21)