Grounded theory method (GTM) is a research methodology used to create substantive theories through inductive and abductive data analysis, rather than hypothetical deductions. 3,4 More specifically, GTM is a research/methods package which includes the cyclic application of '…data collection, coding and analysing through memoing, theoretical sampling and sorting to writing, using the constant comparative method.' 5(p12) At its core, GTM aims to understand behaviour and meanings that participants give to their experiences in a particular setting. 6 Further, the aim is to generate conceptual theories that explain a phenomenon from the perspective and in the context of the people who experienced it 7 that can be applied to practical situations. According to Charmaz 3 , researchers construct grounded theories through their past and present interactions with people, their personal perspectives and their research practices. A constructivist approach therefore allows a representation of experience rather than an exact replication of it 3 and sees the researcher as an interpreter during analysis rather than the ultimate authority in defining the data.
(p52)A constructivist approach to GTM starts with the lived experience, then asks how participants constructed that experience. 8,11 The researcher can then explore how and why participants constructed meanings and actions in certain situations, while keeping in mind that the resultant theory is itself an interpretation that is dependent on the researcher's view. 8,[11][12][13][14] Using this approach, what researchers see and hear will depend on their past experiences and interests, their prior interpretation of the phenomenon, the research context, the researcher-participant relationship, and the methods of generating and recording the data. 8,10 As such, the researcher should treat the research process itself as a social construction, and scrutinise all research decisions and directions. Charmaz's GTM comprises systematic yet flexible guidelines for collecting and analysing (primarily qualitative) data in order to construct theories that are grounded in the data.
3,4A key feature of this method is the concurrent collection and analysis of data, with each informing and focusing the other; this allows analysis to become progressively more theoretical as the research progresses.
3,4Other core tenets include theoretical sampling, constant comparison of data to theoretical