<p>“What is also disturbing is that 3/4 of this reduction occurred by 1992 when the percentage of alcohol-related deaths was 45% and since then there has not been any significant decrease so in that respect you’re right, they haven’t been working as well in the past 15 yrs (although the under 21 rates have been much lower).”</p>
<p>No, just the opposite is the case. The impact of the law followed the passage and implementation of the law. Following that, there shouldn’t be any reason for them to decline further, unless there are further interventions or changes in public attitudes. (Same is true when immunizations become widespread, or other public health interventions become widespread.)</p>