Table 2 Analysis steps using the grounded theory method and Corbin & Strauss's approach [32]

1. Analyzing the data for concepts

In this stage, the interviews and observations were transcribed by the researcher (S.K.) within 24 h after each interview to maintain the data integrity. The transcripts were analyzed using the Comment option in the Microsoft Word software with active participation of the research team. Then, codes were assigned to the transcripts. In fact, the data were broken into the smallest possible components. Codes that implied the same meaning and concept were placed in a single conceptual category. In this stage, note-taking, constant comparison, field note and theoretical sampling were used as part of the analysis process

2. Elaborating the analysis

In this stage, events that were conceptually similar to previously coded events were placed in the same category. Each new event that was placed in the same category added to its general characteristics and dimensions and enriched is diversity. Then, the concepts were placed in more abstract categories according to their characteristics and dimensions. Here, the researcher constantly used the constant comparison method and compared different parts of an interview with other parts, as well as the codes and categories resulting from one interview with other interviews. This process continued until reaching a complete description of each category in terms of its dimensions and characteristics. All members of the research team commented on and discussed the emerging codes and categories in weekly meetings

3. Analyzing data for context

In this stage, the researchers identified different conditions in which the studied phenomenon occurred. They also considered the conditions affecting the phenomenon and identified the situations that led to emergence of a safe care model. The structural/contextual factors affecting the process were also identified

4. Bring process into the analysis

In this stage, the researchers investigated the participants' strategies and behaviors. They further immersed themselves in the categories while simultaneously performing constant comparison. They sought to discover the process of patient safety in home health care as the main theme

5. Integrating concepts around a core category

In this stage, the main category was identified. Besides, the subcategories of the main category were identified and a theory was developed. Notes were reread, story lines were created, and diagrams were drawn to achieve final integration. In addition, a reflective coding matrix was used to describe the main category more precisely and determine its characteristics, dimensions, process, context and outcomes. Data saturation occurred when no new codes were identified and categories were coherent and logically relevant