Table 5 External validity dimensions for included studies
External validity dimension | No (%) studies |
|---|---|
Reach and representiveness of participants | |
Target population described | 32 (100) |
Methods to recruit target population described | 23 (72) |
Individual inclusion and exclusion reported | 23 (72) |
Enrolment rate | 20 (63) |
Representiveness of participants described | 3 (9) |
Reach and representiveness of settings | |
Target setting described | 32 (100) |
Methods to recruit target setting described | 2 (6) |
Setting inclusion and exclusion reported | 6 (9) |
Setting participation rate | 4 (13) |
Representiveness of settings described | 0 (0) |
Implementation and adaptation | |
Intervention characteristics described | 32 (100) |
Time to deliver intervention described | 25 (78) |
Intervention exposure reported | 22 (69) |
Delivery agent described | 30 (94) |
Method to recruit delivery agent described | 1 (3) |
Delivery agent participation rate described | 0 (0) |
Training of delivery agent described | 11 (34) |
Intervention fidelity measured | 5 (16) |
Outcomes for decision makers | |
Outcomes compared to standards | 26 (81) |
Adverse consequences reported | 5 (16) |
Effect moderator by participant characteristics | 5 (16) |
Effect moderator by setting/delivery agent | 0 (0) |
Dose response effect of the intervention | 1 (3) |
Intervention costs or cost effectiveness | 3 (9) |
Attrition rates reported | 29 (91) |
Differential attrition rates reported | 7 (22) |
Representiveness of completers/drop outs | 8 (25) |
Long term effects (>6 months) | 17 (53) |
Acceptability | 16 (50) |
Institutionalisation | 13 (41) |