Table 2.

Stages of analysis

Stage 1	In-depth reading and familiarisation with individual papers, data extraction.
Stage 2	Inductive line-by-line coding of highest quality, index papers (n=5) to develop a set of ‘open codes’ by two independent reviewers (JE and NC).
Stage 3	Codes discussed/agreed, grouped into descriptive themes using NVivo189; codebook applied to all papers, and expanded/modified by identifying new codes/themes and/or merging/renaming existing codes/themes.190
Stage 4	Descriptive themes organised into higher order analytical themes and matrix charted with corresponding indicative quotes.