Table 1.
Study design classification
| Methodology | |
|---|---|
| Observational studies | Case report/Case series |
| Cross sectional | |
| Case- Control | |
| Cohort | |
| Basic studies | Immunology |
| Pathology | |
| Biochemistry | |
| Physiology | |
| Experimental or interventional studies | Randomized controlled trial |
| Non-randomized controlled trial | |
| Reviews | Systematic review |
| Non- systematic review | |
| Qualitative studies |