Criteria | Score | ||
---|---|---|---|
 | + | +/- | - |
1. Study participation | Â | Â | Â |
   • Target population | 3 | 1.5 | 0 |
   • Sampling frame | 3 | 1.5 | 0 |
   • Inclusion criteria | 3 | 1.5 | 0 |
   • Baseline study population | 3 | 1.5 | 0 |
   • Adequate study participation | 3 | 1.5 | 0 |
2. Study attrition | Â | Â | Â |
   • Proportion of population available for analysis | 5 | 2.5 | 0 |
   • Outcome and prognostic factor information on those lost to follow up | 5 | 2.5 | 0 |
   • Reasons and potential impact of subjects lost to follow up | 5 | 2.5 | 0 |
3. Measurement of prognostic factors | Â | Â | Â |
   • Definition of prognostic factor | 5 | 2.5 | 0 |
   • Valid and reliable measurement of prognostic factor | 5 | 2.5 | 0 |
   • Method and setting of prognostic factor measurement | 5 | 2.5 | 0 |
4. Measurement of outcomes | Â | Â | Â |
   • Definition of outcome | 5 | 2.5 | 0 |
   • Valid and reliable measurement of outcome | 5 | 2.5 | 0 |
   • Method and setting of outcome measurement | 5 | 2.5 | 0 |
5. Statistical analysis and presentation | Â | Â | Â |
   • Presentation of analytical strategy | 5 | 2.5 | 0 |
   • Model development strategy | 5 | 2.5 | 0 |
   • Reporting of results | 5 | 2.5 | 0 |