Table 3 Ratings and assessments of transferability

Specifically addressed the question of studies’ validity by emphasizing their internal and external validity

18 articles : [25–30, 34, 36, 37, 43, 54, 55], 2 intervention-based articles [32, 33] and 4 literature reviews [31, 35, 38, 39].

Limitations of generalizability of intervention in health education

11 articles [3, 25, 29–33, 37, 39, 54, 55]

Limitations of experimental frameworks for research in the health education field .

8 articles : 7 theoretical and methodological articles [3, 17, 19, 21, 25, 30, 41] and one intervention-based article [15]

The value of qualitative assessments that make it possible to explore and report on possible interactions among populations, interventions, and context and, therefore, to explain the outcomes

16 articles : 14 theoretical and methodological articles [3, 17, 19–21, 25–27, 29–31, 41, 42, 54] and 3 intervention-based articles [14, 32, 33]