Data collection
Focus group interviews were chosen because they are
suitable for achieving an understanding of the perspectives
and opinions of a particular group [22] and for generating
impressions of and identifying problems with the
services and programmes being investigated [23]. A
semi-structured interview guide was developed, based
on the study aim and research questions [22-24]. The
interview guide was revised after feedback from other
researchers and in light of the results of the pilot focus
group (for a translated version of the interview guide,
please see the Additional file 1).
We aimed to recruit seven or eight participants for
each focus group, hoping for five or six participants. We
judged that small focus groups would be appropriate
because of participants’ physical limitations and the relative