Fig. 1
BAC level distribution across gender. Blood alcohol concentration (BAC) levels were measured using breath analyzers. BAC data were divided into the following categories: no alcohol (0) or low alcohol (0.001–0.049%) consumption, intoxication (0.050–0.099%) and high intoxication (≥0.10%). The data represent the distribution across these categories and are presented as numbers of people (bar) and percentages (above bars). This distribution across categories is also presented for each gender separately as numbers of people (bar) and percentages (within bars). Chi-squared tests showed a significant effect of the distribution of gender across BAC category (Χ2(4) = 49.64, p < 0.001). Z-tests revealed significant gender differences in all categories except the category 0.001–0.049%