Measuring cannabis quantities in online surveys: A rapid review and proposals for ways forward.
Jakob MantheyMaria Teresa Pons-CabreraMoritz RosenkranzHugo López PelayoPublished in: International journal of methods in psychiatric research (2023)
The crude joint method and the product-specific method are the two most promising methods to collect information on cannabis use quantities. Using visual aids may potentially improve the accuracy of those methods.