|0- to 7-Day Mortality Model||8- to 365-Day Mortality Model|
|Variable||Model Chi-Square||HR||95% CI||p Value||Model Chi-Square||HR||95% CI||p Value|
|Killip class (vs. I)||58.1||—||—||<0.0001||46.9||—||—||<0.0001|
|SBP (mm Hg)||95.9||0.97||0.96–0.97||<0.0001||3.02||0.99||0.98–1.00||0.0818|
|Country of enrollment (vs. United States)*||54.9||—||—||<0.0001||12.7||—||—||0.0788|
|Heart rate (beats/min)||25.9||1.01||1.01–10.2||<0.0001||66.6||1.02||1.01–1.02||<0.0001|
|MI location (vs. anterior)||13.6||—||—||0.0011||16.4||—||—||0.0003|
|Other (nonanterior and noninferior)||—||0.75||0.46–1.23||—||—||0.93||0.63–1.36||—|
Reference cell for country by years of education is the United States. The 0- to 7-day model: interaction term for years of education and country were statistically significant for Sweden (p < 0.0001), United Kingdom (p = 0.0003), and Germany (p = 0.0011). New Zealand was excluded from the statistical models because there were <500 patients with data on education from this country. The model reported here excluded the interaction terms for years of education and country. The United States was the reference cell for these comparisons. The 8- to 365-day model: interaction term for years of education and country was statistically significant for Poland (p = 0.0415). New Zealand was excluded from the statistical models as there were <500 patients with data on education from this country. The model reported here excluded the interaction terms for years of education and country. The United States was the reference cell for these comparisons.
CI = confidence interval; HR = hazard ratio; other abbreviations as Table 2.