The meaning of that 50% is fairly elusive, since the research is not accessible to us. I'm guessing it's the result of asking something like "Have you ever look

The meaning of that 50% is fairly elusive, since the research is not accessible to us. I'm guessing it's the result of asking something like "Have you ever looked up any medical information on wikipedia?"; but they might just as easily have omitted the 'medical' from the question.