Table 1 Quantitative study types
Study type | Number of studies |
|---|---|
Observational studies | Â |
    Survey methodology studies | 8 |
    Retrospective case note reviews | 5 |
    Prospective cohort studies | 4 |
    Retrospective cohort studies | 2 |
    Retrospective cross-sectional studies | 4 |
    Micro-costing analysis | 2 |
Interventional studies | Â |
    Randomized controlled trial | 1 |
    Controlled trial | 1 |