Results:Nonpharmacological interven-tions were effective in reducing behav-ioral and psychological symptoms, with
an overall effect size of 0.34 (95% CI=0.20–0.48; z=4.87; p,0.01), as well as in ameliorating caregiver reactions to these
behaviors, with an overall effect size of 0.15 (95% CI=0.04–0.26; z=2.76; p=0.006)