Approaches Used to Measure Acceptance in the 52 Studies
| Measurement Approach | Number of Study |
| Self-reported use | 30 |
| Self-reported interest in using or intention/willingness to use | 8 |
| Self-reported acceptability/satisfaction level | 6 |
| Objective measure of use | 5 |
| Both self-reported use and intention to use | 2 |
| Both objective measure of use and self-reported intention to use | 1 |









