Figures & data
Table A1 Keywords used in structured literature search.
Table A2 databases used in structured literature search.
Table A3 Examples of search strings applied.
Table A4 Aggregation of interventions into eight distinct categories.
Table A5 Intermediate outcome indicators.
Table A6 Final outcome indicators.
Fig. 4 Studies reporting final outcomes1.
1The total number of studies displayed in exceeds fourteen since some studies evaluate multiple combinations of intermediate and final outcomes. The outcome indicators result from different interventions, information on which has been suppressed in this figure for clarity
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