Preferences for pharmacogenomic testing in polypharmacy patients: a discrete choice experiment Supplementary Appendix

Aim: To elicit preferences for pharmacogenomic (PGx) testing in polypharmacy patients. Materials &
methods: A face-to-face discrete choice experiment survey was designed and administered to adult
polypharmacy patients recruited at a local retail pharmacy in Albuquerque (NM, USA). Results: A total
of 128 eligible polypharmacy patients completed the discrete choice experiment survey and significantly
preferred a PGx test with lower cost, better confidentiality and higher certainty of identifying best
medication/dose and side effects and one that can be used to advocate for their treatment needs (all
p < 0.01). Conclusion: This is the first study eliciting preferences for PGx testing among polypharmacy
patients. The study found most polypharmacy patients were willing to take a PGx test and their
preferences were mostly influenced by test cost.