This is actually a very good point. I was thinking myself something along similar lines that intuitively speaking, death by unnatural causes like terrorism/homi

This is actually a very good point. I was thinking myself something along similar lines that intuitively speaking, death by unnatural causes like terrorism/homicide/suicide are of course more "newsworthy" than the ones due to "heart-disease". Although the study is trying to do a larger scale comparison between the perceived and actul leading causes of deaths, it would serve it much better if it were to segment the results by age group.