Table 2.
Reported reliability and internal consistency coefficients
| Article | Measure code(s) | No. of items | Reported coefficient |
|---|---|---|---|
| Buckley, Bonar, Walton, Carter, Voloshyna, Ehrlich, | • Alcohol effects | 5 | Cronbach's a = .90 |
| & Cunningham (2017) | • Drink count | ||
| • Open container | |||
| de Campos, Pitombo, Delhomme, & Ferreira (2021) | • Any consumption | 2 | Cronbach's a = .812 |
| • Drink count | |||
| Freeman, Parkes, Lewis, Davey, Armstrong, | • Legal limit | 4 | Bivariate correlations: |
| & Truelove (2020) | Item 1 and 2, r = .810, p = .01 | ||
| Item 1 and 3, r = .60, p = .01 | |||
| Item 2 and 3, r = .59, p = .01 | |||
| Item 1 and 4, r = .31, p = .01 | |||
| Item 2 and 4, r = .30, p = .01 | |||
| Freeman, Parkes, Mills, Truelove, & Davey (2021) | • Legal limit | 3 | Bivariate correlations: |
| Item 1 and 2: r = .82, p < .01 | |||
| Item 1 and 3: r = .31, p < .01 | |||
| Item 2 and 3: r = .32, p < .01 | |||
| Freeman, Parkes, Truelove, Lewis, & Davey (2021) | • Legal limit | 4 | Bivariate correlations: |
| Item 1 and 2: r = .82, p < .01 | |||
| Item 1 and 3: r = .60, p < .01 | |||
| Item 1 and 4: r = .31, p < .01 | |||
| Item 2 and 3: r = .62, p < .01 | |||
| Item 2 and 4: r = .32, p < .01 | |||
| Item 3 and 4: r = .25, p < .01 | |||
| Gruenewald, LaScala, & Ponicki (2018) | • Timeframe | 2 | Intraclass correlation = .896 |
| • Too much | |||
| Mello, Baird, Lee, Strezsak, French, & | • Alcohol effects | 6 | Cronbach's a = .95 |
| Longabaugh (2016) | • Drink count | ||
| • Drink count + timeframe | |||
| • Open container | |||
| • Too much | |||
| Metzger, Blevins, Calhoun, Ritchwood, Gilmore, | • Any consumption | 2 | Bivariate correlation: |
| Stewart, & Bountress (2017) | Item 1 and 2: r = .63, p < .01 | ||
| Monroe, Nichols, Crew, Brown, & King (2020) | • Any consumption | 1 | Kappa statistic = 61.1 |
| Osilla, Paddock, McCullough, Jonsson, & | • Drink count + timeframe | 2 | Cronbach's a = .80, .86 |
| Watkins (2019) | |||
| Patel, Reed, MacKillop, & Amlung, M (2019) | • Any consumption | 2 | Bivariate correlation: |
| Item 1 and 2: r = .78, p < .05 | |||
| Shao, Yin, Yu, & Wang (2020) | • Any consumption | 4 | Cronbach's a = .622 |
| • Legal limit | |||
| Zhang, Ge, Qu, Zhang, & Sun (2018) | • Alcohol effects | 2 | Cronbach's a = .65 |
| • Intoxicated |
Note: No. = number.