Methodological approaches for conducting follow-up research with clinical trial participants: a scoping review and expert interviews

Table 3 Summary of study administration

Tool used, mode of delivery and administration	Quantitative studies (n = 12)	Qualitative studies (n = 10)	Mixed-method studies (n = 1)
Research tool used
Self-administered internet-based survey	3 [24] [25] [34]
Self-administered paper based questionnaires	6 [28] [30] [36] [37] [38] [41]		1 [35]
Questionnaire, but no information	3 [21] [22] [27]
Face-to-face individual interviews		7 [23] [26] [31] [32] [33] [39] [42]	1 [35]
Focus group discussions		3 [29] [40] [43]
Mode of delivery and administration
On site (waiting room, meeting room)
Questionnaire	3 [22] [27] [28]
Face-to-face interviews		3 [23] [31] [39]
Focus group discussion		1 [29]
At home
Questionnaire (email, postal delivery)	6 [24] [25] [30] [34] [37] [38]		1 [35]
Face-to-face interviews		2 [26] [33]	1 [35]
Mixed (on site and at home)	1 [36]	1 [23]
No further information	2 [21] [41]	3 [40] [42] [43]

ISSN: 1745-6215