Figure 3).

The adjusted probability of reperfusion therapy according to age and number of pre-existing conditions. The number of pre-existing conditions represents the cumulative sum of all cardiac and noncardiac comorbid conditions and is stratified according to the typical 50-, 65- and 80-year-old patient. The probability of reperfusion therapy (±95% CI) is adjusted for age, sex, socioeconomic status, ethnicity, hospital type, rural-urban status and hospital arrival times. P=0.001 for the effects of age; P<0.001 for the effect of the number of pre-existing conditions