Average air pollution (µg/m3), temperature (°C) and IMD scores for selected West Midlands postal code areas with SIDS and birth counts, 1996–2006
| Post town (area) | PM10 | SO2 | CO | O3 | NO2 | NO | NOx | Temperature (minimum- maximum) | IMD score | SIDS event (%) | Birth count (%) |
| Birmingham (B) | 23.8 | 6.8 | 0.4 | 38.5 | 33.9 | 17.5 | 60 | 7.2–12.8 | 36.6 | 118 (55.9) | 753 844 (79.9) |
| Coventry (CV) | 18.3 | 11.3 | 0.3 | 32.4 | 22.5 | 9.2 | 36.2 | 7.7–13.5 | 23.7 | 43 (20.4) | 91 393 (9.7) |
| Walsall (WS) | 41.5 | 89.4 | 6.4–14.0 | 25.2 | 24 (11.4) | 53 532 (5.7) | |||||
| Wolverhampton (WV) | 23.8 | 9.3 | 0.5 | 38.9 | 29.5 | 18.9 | 59.5 | 8.4–12.3 | 33.4 | 26 (12.3) | 45 168 (4.8) |
| Total | 211 (100) | 943 937 (100) |
IMD, Index of Multiple Deprivation; SIDS, sudden infant death syndrome.