Table 1 Distribution of mortality counts and city characteristics across 50 US cities during the period 1989–2000
Percentile
5%25%50%75%95%
All cities (n = 50)
    Total deaths (n)140485083288225168178477588
    Myocardial infarction deaths (n)1475405462491529949975
    Cardiac arrest deaths (n)11126972213443174
Cities included in the cold analysis (n = 42)
    Daily temperature during cold months (°C)
        Mean0.11.54.16.913.4
        Variance11.830.535.143.451.8
    Central heating (%)*8089969899
    Population density (population/km2)9431551810344340
Cities included in the heat analysis (n = 42)
    Daily temperature during warm months (°C)
        Mean19.019.822.124.827.8
        Variance2.011.518.621.126.8
    Central air conditioning (%)*1735677690
    Population density (population/km2)1293605159053621
  • *Data available only for 38 cities.