Coffee Cuts accidents .... doh !

This article on the BBC website caught my eye during my daily RSS catch up this morning.

http://www.bbc.co.uk/news/health-21841825

The research shows that although caffeine is clearly not a substitute for being fresh and rested whilst driving it does seem to reduce accidents - the stat quoted is a reduction of 63% once adjusted for other factors like age, sleep pattern, distance driven and so forth.

That's a pretty massive reduction and seems very statistically significant - I wonder though if a more concientious, intelligent driver is more likely to take a break and grab a coffee and rest during a long drive than a less reliable person - perhaps it's not necessarily just the coffee but a combination of that and a willingness to accept advice about stopping for breaks and a stimulating drink !