Factor analysis of the 12 subdimensions of the DOCS indicated an acceptable goodness of fit for the original four factor model which were in line with other studies.
Þegar 12 undirvíddir Spurningalistans voru þáttagreindar sýndi upprunalegt fjögurra þáttalíkan mun betri mátgæði sem var í samræmi við fyrri rannsóknir.