On average, the drinks consumed by participants in this study exceeded the definition of a standard drink [1.12 (SD = 0.36) standard drinks for drink 1 and 1.13 (SD = 0.35) for drink 2], which is consistent with prior research (Kaskutas & Graves, 2000). In order to estimate BAC, we used a nomogram that takes into account the number of standard drinks, the time from the end of drink consumption to the End Drink report, gender, and weight to estimate BAC at the time of first and second drink reports within a single drinking episode. The average estimated BAC (eBAC) was 0.023 g/dl (SD = 0.013) at the end drink 1 and 0.042 g/dl (SD = 0.027) at the end drink 2. These results are consistent with previously published guidelines for calculating BAC by varying levels of gender, weight, drinks, and time (Brick, 2006; Fisher et al., 1987).
