Table 2.
Quality Scores assessment
| Authors | ELCWP Score | Chalmers Score | SMA | BMI MA | ||||
| PD (%) | AP (%) | Total (%) | IV (%) | EV (%) | Total (%) | |||
| Arriagada [16] | 81.0 | 70.9 | 70.3 | 84.2 | 54.5 | 75.9 | Yes | Yes |
| Laplanche [17] | 59.3 | 58.1 | 58.7 | 50.0 | 40.9 | 47.6 | Yes | Yes |
| Jackson [18] | 30.3 | 35.7 | 33.2 | 21.0 | 27.2 | 22.8 | Yes | Yes |
| Gregor [19] | 69.0 | 49.6 | 58.7 | 59.5 | 27.2 | 51.1 | Yes | Yes |
| Eagan [20] | 33.0 | 40.4 | 36.9 | 28.5 | 20.4 | 24.7 | Yes | No data |
| Seydel [21] | 25.0 | 28.0 | 26.6 | 14.3 | 13.6 | 14.1 | Yes | Yes |
| Hansen [22] | 52.3 | 31.6 | 41.3 | 47.6 | 40.9 | 45.9 | Yes | No data |
| Ohonoshi [23] | 38.0 | 43.1 | 40.7 | 42.8 | 54.5 | 47 | Yes | Yes |
| Beiler [24] | 25.4 | 23.1 | 24.2 | 33.3 | 13.6 | 28.2 | Yes | Yes |
| Niiranen [25] | 48.9 | 34.7 | 41.3 | 40.4 | 27.3 | 37 | Yes | Yes |
| Maurer [26] | 36.9 | 31.1 | 33.8 | 23.8 | 13.6 | 22.3 | Yes | Yes |
| Aisner [27] | 37.4 | 28.7 | 32.8 | 10.5 | 13.6 | 11.4 | No data | Yes |
| Mean | 44.7 | 39.6 | 41.5 | 38.0 | 28.9 | 35.7 | ||
| Median | 37.7 | 35.2 | 38.8 | 36.9 | 27.2 | 32.6 | ||
PD : protocol designed AP : analysis performance ELCWP : European Lung Cancer Working Party IV : internal validity EV : external validity SMA : survival meta-analysis (studies evaluables) BMI : brain metastasis incidence meta-analysis (studies evaluables)