Throughout the study process measures were taken to achieve trustworthiness [ 50].
Content analysis was used because of its methodological characteristics and reliable measures to achieve trustworthiness.
To achieve trustworthiness, the authors independently analysed the material, but interpretations and conclusions were constantly checked and discussed until a consensus was reached regarding the codes and categories.
In light of the fact of preconceptions of the first author as a GP, who is involved in other NH studies, the co-researchers (also GPs, and one behavioural scientist) viewed the material in every step of the process of analysing data to supplement each other's statements and interpretations in order to achieve trustworthiness [ 25].
Throughout Graneheim and Lundman (2004) technique it was possible to conduct an interpretation in light of the qualitative content analysis, achieving necessary trustworthiness for the discussion and evaluation presented in this paper.
We achieved data trustworthiness through collection and review of field notes by the trained research assistant at each focus group session, as noted above.
Advantages of this approach include the ability to nurture consensus among multiple definitions of trustworthiness, capture design rationale, evaluate qualitatively the extent of trustworthiness achieved, and maintain historical records of design decisions.
The general inductive approach can be seen as simpler than other analysis methods but still involves a systematic analysis of raw data in order to achieve qualitative research trustworthiness described by Lincoln and Guba (1985): credibility (internal validity), transferability (external validity), dependability (reliability) and confirmability (objectivity).
In his book "Hail to the Chief: The Making and Unmaking of American Presidents" (Hyperion, 1996), the historian Robert Dallek lists vision as a sine qua non of presidential greatness, along with "pragmatism, ability to achieve consensus, charisma and trustworthiness".
