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Table 2 Mean (standard deviation) and effect size estimates for global measures of cognitive function over time in treated and untreated patients with mild–moderate Alzheimer’s disease

From: Treatment effects in multiple cognitive domains in Alzheimer’s disease: a two-year cohort study

Measure Assessment time Mean (standard deviation) Effect size
   Treated Untreated (Cohen’s d)
MMSE Baseline 24.3 (3.3) 22.9 (4.1)  
  1 year 23.1 (4.1) 20.7 (5.2) 0.7
  2 years 20.2 (5.5) 16.4 (7.6) 0.5
DRS total Baseline 120.5 (15.1) 117.9 (12.0)  
  1 year 116.7 (17.1) 110.0 (18.3) 0.7
  2 years 104.8 (24.2) 91.8 (29.7) 0.5
  1. DRS, Dementia Rating Scale; MMSE, Mini-Mental State Examination.