BACKGROUND Ischemic heart diseases are the most common cardiovascular diseases. This study aimed to assess the effects of video training about risk factors based on health belief model on knowledge and attitude of myocardial infarction patients after discharge. METHODS This was a quasi-experimental study conducted in 2010. Eighty patients were randomly assigned to either intervention or contr...

Cronbach’s Alpha coefficient is the most popular method of examining reliability. It is typically used when the researcher has several Likert-type items that are summed or averaged to make a composite score. Distribution of alpha coefficient has been subjected of many studies. In this study relationship between randomness and Cronbach alpha coefficient were investigated and in this context, pre...