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. 2021 Sep 3;44(11):622–636. doi: 10.1159/000518848

Table 2.

Assessment of data quality for each included study listed from highest to lowest quality

Type of RT Criteria authors ≥20 patients ≥50% at the first follow-up Corrected to norms Definition provided Adjusted for baseline Parallel tests Diversity NCA Overall quality
WBRT Mehta et al. [7, 18, 38, 74] + + + + + + 6 good
Gondi et al. [26] + + + + + +/– 5.5 good
Westover et al. [41] + + +/– + + + 5.5 good
Saito et al. [28] + + + + + 5 good
Deng et al. [35] + + + + + 5 good
Zhu et al. [40] + + + + + 5 good
Zhan et al. [39] + + + + 4 medium
Onodera et al. [25] + + + + 4 medium
Cheng et al. [34] + + + 3 medium

SRS Chang et al. [29] + + + + + + 6 good
Brown et al. [32] + + + + + + 6 good
Chang et al. [31] + + + + + 5 good
Habets et al. [30, 43] + + + + + 5 good
Minniti et al. [42] + + + + + 5 good
Onodera et al. [25] + + + 3 medium
Kirkpatrick et al. [24] + +/– 1.5 low

NCA, neurocognitive assessment; RT, radiotherapy; SRS, stereotactic radiosurgery; WBRT, whole-brain radiotherapy. + Indicates 1 point awarded for that criterion. − Indicates no points. +/– 0.5 points.