Measuring cannabis quantities in online surveys: A rapid review and proposals for ways forward
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Measuring cannabis quantities in online surveys: A rapid review and proposals for ways forward. / Manthey, Jakob; Pons-Cabrera, Maria Teresa; Rosenkranz, Moritz; Lopez-Pelayo, Hugo.
In: INT J METH PSYCH RES, Vol. 32, No. 3, 09.2023, p. e1971.Research output: SCORING: Contribution to journal › SCORING: Review article › Research
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TY - JOUR
T1 - Measuring cannabis quantities in online surveys: A rapid review and proposals for ways forward
AU - Manthey, Jakob
AU - Pons-Cabrera, Maria Teresa
AU - Rosenkranz, Moritz
AU - Lopez-Pelayo, Hugo
N1 - © 2023 The Authors. International Journal of Methods in Psychiatric Research published by John Wiley & Sons Ltd.
PY - 2023/9
Y1 - 2023/9
N2 - OBJECTIVES: Cannabis use quantities are relevant for determining cannabis-related harms. This research aims to provide an overview of the available methods to assess quantities through self-report.METHODS: A rapid review of various strategies to collect information on cannabis use quantities through self-report. Two independent literature searches resulted in n = 38 studies included for review.RESULTS: A total of n = 14 studies employed methods for collecting cannabis use quantities that are not suitable for online surveys (e.g., rolling a fake joint). Of the remaining n = 24 studies with items that are suitable for online surveys, the quantity assessment was performed in three different ways. The data collection was either carried out by asking (a) for the total number of joints (i.e., crude joint method), (b) for the total weight (i.e., crude weight method), or (c) for specific products separately, for example, for the amount of flower and resin (i.e., product-specific method). In only n = 8 studies, cannabis use quantities were ascertained by providing visual aids (e.g., illustration of various amounts of flower).CONCLUSIONS: 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.
AB - OBJECTIVES: Cannabis use quantities are relevant for determining cannabis-related harms. This research aims to provide an overview of the available methods to assess quantities through self-report.METHODS: A rapid review of various strategies to collect information on cannabis use quantities through self-report. Two independent literature searches resulted in n = 38 studies included for review.RESULTS: A total of n = 14 studies employed methods for collecting cannabis use quantities that are not suitable for online surveys (e.g., rolling a fake joint). Of the remaining n = 24 studies with items that are suitable for online surveys, the quantity assessment was performed in three different ways. The data collection was either carried out by asking (a) for the total number of joints (i.e., crude joint method), (b) for the total weight (i.e., crude weight method), or (c) for specific products separately, for example, for the amount of flower and resin (i.e., product-specific method). In only n = 8 studies, cannabis use quantities were ascertained by providing visual aids (e.g., illustration of various amounts of flower).CONCLUSIONS: 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.
KW - Humans
KW - Cannabis
KW - Surveys and Questionnaires
KW - Self Report
U2 - 10.1002/mpr.1971
DO - 10.1002/mpr.1971
M3 - SCORING: Review article
C2 - 37089041
VL - 32
SP - e1971
JO - INT J METH PSYCH RES
JF - INT J METH PSYCH RES
SN - 1049-8931
IS - 3
ER -
