Table 1

Quality assessment results for included studies
Reference Q1. Was the WML identification done by a radiologist/physician? Q2. Was the cognitive performance measured using a standardized method? Q3. Was there a sample size calculation? Q4. Were age or education considered as confounders?
Groot et al. et al. [24] + + - +
Shenkin et al. [25] + + - -
Baune et al. [26] - + - +
Kim et al. [27] - + - +
Silbert et al. [28] - + - +
McClleland et al. [21] + + - +
Wright et al. [29] - + - +
Kaplan et al. [30] - + - +
Wakefield et al. [31] - + - +
O’Brien et al. [32] + + - +
Smith et al. [14] - + - +
Burns et al. [33] + + - +
Ishii et al. [34] + + - +
Tullberg et al. [35] - + - -

Bolandzadeh et al.

Bolandzadeh et al. BMC Neurology 2012 12:126   doi:10.1186/1471-2377-12-126

Open Data