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Can lottery tickets buy you more data in an asthma trial? Probably not. Open access http://t.co/71aJTZHXGv
Can lottery tickets buy you more data in an asthma trial? Probably not. Open access http://t.co/71aJTZHXGv
The effect of two lottery-style incentives on response rates to postal questionnaires in a prospective cohort study... http://t.co/1LbTjGwR
Weer blijkt het werken met een incentive niet te leiden tot meer deelname. http://t.co/q4rlT2TZ