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. 2020 Dec 24;10(12):e038198. doi: 10.1136/bmjopen-2020-038198

Table 1.

Definition and category of alcohol consumption trajectory

Category of trajectory of drinking Definition
Consistent-regular drinkers/mostly consistent-regular drinkers Drinkers who drink alcohol regularly in all study waves or drinkers identifying themselves as regular drinkers in three to four out of five study waves or at least 50% of the study waves
Consistent-occasional/mostly consistent-occasional drinkers Drinkers who drink alcohol occasionally in all study waves or those who reported themselves as occasional drinkers in at least three out of five study waves
Ex-drinkers with less regular/less occasional drinking history Drinkers who reported regular or occasional drinking patterns up to two out of five study waves and stopped drinking in the last waves
Maintaining abstainers Respondents who never drink in their lifetime/reported abstention from drinking in all study waves