< Back to results 37.1% of respondents said they had not taken illegal drugs. Read more about this response below. 61.4% of respondents said they had taken illegal drugs - read those results here. Find out what the results mean overall - click...
The Concrete Drugs and Alcohol Survey goes live on Tuesday 4 December. Contribute to the results - take part.
Rory McIlroy is set to to become one of the golfing greats after a sensational year of competition.