Table 1

Study designs of the included sources

Research typeNumber of sourcesRelevant citations
Interventional/experimental 8
Randomised controlled trial (RCT)3 47 48 79
Pilot/exploratory RCT3 26 101 110
Feasibility (cohort)1 30
Evaluation (cohort)1 31
Quality improvement/service development 22
Interventional12 32 49–51 83 94 100 105–108 112
Non-interventional3 52 53 99
Mixed designs7 33 34 54 84 95 103 114
Non-interventional studies 38
Prospective studies17 19–21 35 36 55–59 80 81 85 86 111 115–117
Retrospective studies11 22 23 37 38 60 61 87 88 96 97 118 119
Cross-sectional studies5 39 62 63 77 120
Delphi1 92
Qualitative4 24 27 28 78
Literature 33
Systematic review7 6–8 64–66 121
Narrative literature review3 40 46 89
State of the art review2 90 93
Editorial17 25 41–44 67–75 91 98 109
Conference materials1 45
Study protocol3 29 76 102
Total sources included 103