Relative Risk of Myocardial Infarction per 1°C Change in Temperature above Threshold temperature by Subgroup.

<p>Model adjusted for precipitation, humidity, sea level pressure, and air pollutants (PM10, NO₂) using a spline function.</p><p>RR = Relative risk.</p><p>STEMI: ST elevation myocardial infarction.</p><p>Non-STEMI: Non-ST elevation myocardial infarction.</p><p>Spring: March–May, Summer: June–August, Autumn: September–November, Winter: December–February.</p><p>*<b><i>P</i></b><0.05;</p><p>** <b><i>P</i></b><0.001.</p>a<p>For heat exposure, temperature increase of 1°C above threshold.</p>b<p>For cold exposure, temperature decrease of 1°C below threshold.</p>c<p>Maximum temperature.</p>d<p>Mean temperature.</p>e<p>Minimum temperature.</p>f<p>Threshold temperature.</p>g<p>No threshold effect was identified.</p

Summary Statistics for Temperature and other Meteorological Variables with the Level of Air pollutants in Study Areas.

<p>SD: Standard deviation.</p><p>IQR: Interquartile range.</p

Relative Risk of Myocardial Infarction per 1°C Change in Diurnal Temperature Range (DTR) above the Threshold Temperature in All Regions by Season.

<p>Model adjusted for precipitation, humidity, sea level pressure, and air pollutants (PM10, NO₂) using a spline function.</p><p>RR = Relative risk.</p><p>STEMI: ST elevation myocardial infarction.</p><p>Non-STEMI: Non-ST elevation myocardial infarction.</p><p>Spring: March–May, Summer: June–August, Autumn: September–November, Winter: December–February.</p><p>*<b><i>P</i></b><0.05;</p><p>** <b><i>P</i></b><0.001.</p>a<p>Threshold temperature.</p>b<p>No threshold effect was identified.</p

Relative Risk of Myocardial Infarction per 1°C Change in Successive Daily Temperature Changes by Subgroup.

<p>Model adjusted for precipitation, humidity, sea level pressure, and air pollutants (PM10, NO₂) using a spline function.</p><p>RR = Relative risk.</p><p>STEMI: ST elevation myocardial infarction.</p><p>Non-STEMI: Non-ST elevation myocardial infarction.</p><p>Spring: March–May, Summer: June–August, Autumn: September–November, Winter: December–February.</p><p>*<b><i>P</i></b><0.05;</p><p>** <b><i>P</i></b><0.001.</p>a<p>Temperature rise between consecutive days.</p>b<p>Temperature fall between consecutive days.</p>c<p>No threshold effect was identified.</p

Daily adjusted emergency visit (DAEV) rate for MI according to maximum temperature by regions: A. Combined regions, B. Central region, C. Southern region.

<p>Lower figures showed change of R² values in each temperature by piecewise analysis and maximum R² value was chosen as the inflection point. The maximum R² value of the central region was 30.5°C; however, it did not show a threshold effect.</p