Family Practice · 2007 · 117 citations · 20 references
There was no change in the proportion of patients receiving appropriate medication as defined by the NSF. The pharmacist-led service was more expensive than standard care.
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Sample Selection Bias as a Specification Error
James J. Heckman · Econometrica · 1979 · 28.4K citations
Getting Evidence into Practice
Ian Sanderson · Evaluation · 2004 · 313 citations