Characteristics of pharmacogenetic studies included in the systematic review.

†58 of 1,668 studies are mixed dynamic/kinetic. ‡Meta-analyses excluded, values are for 1504 abstracts that report a sample size. 4 of 161 full-text articles were mixed pharmacokinetic/pharmacodynamic. *Percentages are of total. **Includes journal that are not listed with ISI. ⊥For 816 abstracts reporting a p value or 81 full-text papers. §Studies investigating plasma levels of drugs.