Table 1.
Questions used for the BSQF and CSQF instruments.
Fig 1.
Anatomy of jitter plot of frequency ratio and average quantity ratio with five zones.
Table 2.
Characteristics of the sample by drinking status (n = 804).
Table 3.
Comparisons of frequency, average quantity, and total consumption ratios reported using different instruments (CSQF and BSQF) within the same participant.
Fig 2.
Jitter plots of drinking frequency ratio and average quantity ratio for beer (2A), white spirits (2B), whisky (2C), and other beverages (2D) Zone A represents CSQF over-report by average quantity, Zone B represents CSQF over-report by frequency, Zone C represents BSQF over-report by average quantity, Zone D represents BSQF over-report by frequency, and Zone E represents equivalence; Line P represents the equality of effect line, Line Q represents CSQF over-report of 1.5 times, and Line R represents BSQF over-report of 1.5 times.
Table 4.
Multiple linear regression analysis of the Log2 ratio of total consumption (dependent variable) against Log2 ratio of frequency and Log2 ratio of average quantity (independent variables) between the CSQF and BSQF.
Table 5.
Summary drinking variables by measurement instruments (BSQF and CSQF; n = 804 with 183 current drinkers).