P4‐286: NEUROPSYCHIATRIC SYMPTOMS PREDICT DAILY LIFE FUNCTIONALITY IN DEMENTIA PATIENTS: RESULTS FROM THE SUNNYBROOK DEMENTIA STUDY. (1st July 2006) - Mirza, Saira S.; Sapkota, Shraddha; Ramirez, Joel; Stuss, Donald T.; Herrmann, Nathan; Lanctot, Krista L.; Black, Sandra E.; Masellis, Mario