Question: A clinical trial is conducted in hypertensive patients to assess the effectiveness of a new drug in reducing the occurrence of heart failure. The Relative Risk (RR) of heart failure in relation to the usual drug is 0.69 with a 95% CI of 0.31 to 1.17. What do these results mean? 
 Options:  <1> The new drug decreases the risk of heart failure significantly. <2> The new drug is very effective and should be marketed. <3> The reduction of the risk of heart failure with the new drug is clinically irrelevant. <4> There are no statistically significant differences between the effect of the drugs studied. <5> The new drug increases the risk of heart failure but not significantly.
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