Estimating Cannabis Consumption in Milligrams of THC From Self-Reported Hit Size

Abstract Objective: Estimating delta-9 tetrahydrocannabinol (mgTHC) using hits involves converting hits to grams via a grams-per-hit ratio (GPHR). Previous studies assumed a single hit size (SHS), ignoring individual hit size variations. This study investigates a multiple qualitative hit size (MQHS) approach based on self-reported hit sizes (small, medium, large) to improve mgTHC estimates. Method: Adults (N = 1,824) who used cannabis in the past week completed an online survey on cannabis consumption, reporting quantities in hits and grams, and estimating