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The frequencies of use of the four strategies of interventions
| Type of study | |||
|---|---|---|---|
| Strategy of intervention | Effective (29 studies) | Non‐effective (10 studies) | |
| 1 | Motivation & Support | 29 | 9 |
| 2 | Monitoring & Feedback | 20 | 8 |
| 3 | Information & Education | 19 | 6 |
| 4 | Activity | 9 | 1 |
