Fifty-three percent of patients injured in accidental falls in the evening in Helsinki and 15% of time-, site- and sex-matched control pedestrians were alcohol-involved. Relative risk of injury, if 1.0 at zero BAC, was 3 at BACS 60-100 mg/100 ml, 10 at 101-150 mg/100 ml and about 60 at BACS above that.