% or M(SD) | |
---|---|
Breathalyzer readings | |
Number of breathalyzer readings (out of 28) | 22.29 (5.65) |
Days with at least one breathalyzer reading (out of 14) | 12.47 (2.12) |
Number of daytime breathalyzer readings (out of 14) | 12.06 (2.14) |
Number of evening breathalyzer readings (out of 14) | 10.24 (3.85) |
Average BAC level | 0.02 (0.03) |
Mobile surveys | |
Number of mobile surveys (out of 28) | 17.41 (8.52) |
Days with at least one mobile survey (out of 14) | 10.71 (4.21) |
Number of daytime mobile surveys (out of 14) | 10.29 (4.21) |
Number of evening mobile surveys (out of 14) | 7.12 (4.87) |
Average number of drinks reported/survey | 2.62 (2.09) |
Alcohol use | |
Average percent of total breathalyzer readings indicating alcohol consumptiona | 20% |
Average percent of daytime breathalyzer readings indicating alcohol consumptiona | 19% |
Average percent of evening breathalyzer readings indicating alcohol consumptiona | 22% |
Average percent of total surveys indicating alcohol consumptiona | 25% |
Average percent of daytime surveys indicating alcohol consumptiona | 20% |
Average percent of evening surveys indicating alcohol consumptiona | 40% |
Average percent of days with at least one breathalyzer reading indicating alcohol consumptiona | 23% |
Average percent of days with at least one survey indicating alcohol consumptiona | 34% |
Average percent of time that breathalyzer and survey matched in terms of detecting alcohol consumption | 90% |