Table 2.

Trustworthiness criteria

Criteria	Techniques performed and application procedures
Credibility	Investigator triangulation: each interview was analyzed by three researchers. Thereafter, team meetings were performed in which the analyses were compared and categories were identified. Participant triangulation: the study included participants belonging to different diagnosis. Thus, multiple perspectives were obtained with a common link (the experience of having PICC). Triangulation of methods of data collection: semi-structured interviews were conducted and researcher field notes were kept. Participant validation: this consisted of asking the participants to confirm the data obtained at the stages of data collection and analysis.
Transferability	In-depth descriptions of the study performed, providing details of the characteristics of researchers, participants, contexts, sampling strategies, and the data collection and analysis procedures.
Dependability	Audit by an external researcher: an external researcher assessed the study research protocol, focusing on aspects concerning the methods applied and study design.
Confirmability	Investigator triangulation, participant triangulation, and data collection triangulation. Researcher reflexivity was encouraged via the performance of reflexive reports and by describing the rationale behind the study.

Credibility confidence in the truth of the findings; transferability reporting that the findings have applicability in other contexts; dependability reporting that the findings are consistent and could be repeated; confirmability the degree to which findings are determined by the respondents and not by the biases, motivations, and interests of researchers [24, 28, 32]