Complex sentence: The Framingham Risk Score predicts only future coronary heart disease (CHD) events, however, it does not predict future total cardiovascular events, meaning that it does not predict risk for stroke, transient ischemic attack (TIA), and heart failure.
Split into simpler sentences: The Framingham Risk Score predicts only future coronary heart disease (CHD) events. It does not predict future total cardiovascular events, i.e. it does not also predict risk for stroke, transient ischemic attack (TIA), and heart failure.