Fig. 1

Items from the Grog Survey App used to ask the first three questions of the Alcohol Use Disorders Identification Test (AUDIT-C). 1–2 Screens used to ask AUDIT-1m (based on AUDIT question 1). 3–5 Selection of the screens used to ask about each of the last four drinking occasions (Finnish method). AUDIT-2m (quantity of drinking) was derived from the data on the last four drinking occasions collected on the App. 6. Screen used to ask AUDIT-3mV (a modification of AUDIT question 3). This uses the threshold of approximately 50 g of pure alcohol in line with definitions of short-term risk of drinking based on Australian National Health and Medical Research Council drinking guidelines. An image dynamically appears that is approximately equivalent to five Australian standard drinks (50 g) of the alcohol type most often consumed by each participant based on their last four drinking occasions