The study used a purposeful sampling method, the most common type of qualitative sampling technique [ 36].
The personal interview, one of the most common approaches to qualitative research in the public health literature, offers an opportunity to interact with study participants during data collection [ 58].
The most common types of qualitative data collection methods are field observation (direct observation or indirect observation), interviews (semi-structured, in-depth, individual interviews and focus groups), and document analysis (such as charts, journals and correspondence) [ 25].
In total, 56 Key Informants (KI) were invited to participate in a qualitative study, each selected using purposive sampling, the most common sampling method in qualitative research [ 23].
In this article, there are also brief mentions of the most common techniques used in qualitative research, as well as a discussion of the ethical considerations in formulating the research questions.
The most common way to collect qualitative data is by conducting interviews.
Furthermore, the first draft of the questionnaire included items reflecting the most common themes in the qualitative patient interviews.
As the most common sampling strategy in qualitative research [ 33], we used a purposive sample of participants relevant to our research question.
Focus groups were audio-recorded, transcribed verbatim by a member of the research team and analysed using thematic analysis (one of the most common approaches to analysing qualitative data, especially within the field of health-related research) [ 19].
