141st APHA Annual Meeting and Exposition

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Recorded Annual Meeting Presentations (RAMP) are now available for purchase.
Only $90 for presenters, $140 for registered attendees and $200 for non-attendees.

Online Program

Trent Lalonde, PhD

Associate Professor
Univeristy of Northern Colorado
Greeley, CO
USA trent.lalonde@unco.edu

5095.0 A power comparison between hierarchical and marginal longitudinal logistic regression models: Application to marijuana usage