Two independent OCD experts (T.B.V. and L.M.) performed the screening procedure for the databases to determine which studies met the eligibility criteria. First, duplicate publications were screened and excluded (n = 101). Next, the screening process was applied to titles and abstracts (n = 4022), and potentially eligible full-text articles were selected (n = 95), followed by full-text review (T.B.V. and L.M.). Disagreements were discussed and resolved by consensus, or by consulting a third expert (M.C.R.). The Cohen’s kappa coefficient of agreement between the two reviewers was excellent (0.90). The screening process was performed using the Rayyan software [59].
