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Fig. 3 | Harm Reduction Journal

Fig. 3

From: The hazardous (mis)perception of Self-estimated Alcohol intoxication and Fitness to drivE—an avoidable health risk: the SAFE randomised trial

Fig. 3

Accuracy of self-estimation in relation to measured breath alcohol concentration (BrAC). Data are presented as differences between measured BrAC and self-estimated BrAC. Negative values represent an overestimation, positive values indicate an underestimation of the objectively detected BrAC. The striking diagonals that have a y-intercept of − 0.05 and a slope of 1 arise from participants estimating their BrAC as 0.05, and all BrAC measurements being recorded to two decimals. Study day 1 is shown in a, study day 2 in b

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