Fig 1.
PRISMA diagram of study selection and coding process.
Table 1.
Data items, response format and response options.
Table 2.
Characteristics of studies included in scoping review.
Fig 2.
Yearly counts of studies on structural features, user-directed tools, and regulations.
2020 only includes studies through May.
Table 3.
Z-curve estimates and 95% confidence intervals.
Fig 3.
Z-curve of most focal hypothesis tests.
The vertical red line refers to a z-score of 1.96, the critical value for statistical significance when using a two-tailed alpha of .05. The dark blue line is the density distribution for the inputted p-values (represented in the histogram as z-scores). The dotted lines represent the 95% confidence interval for the density distribution.