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Table 8 Descriptive statistics of observed and simulated NP-Batt scores for Alzheimer's disease patients at months 6, 12 and 24

From: For debate: substituting placebo controls in long-term Alzheimer's prevention trials

 

Minimum

First quartile

Median

Mean

Third quartile

Maximum

Standard deviation

Observed

-4.48

-2.66

-1.95

-2.05

-1.40

-0.14

0.87

Simulated

-4.85

-2.65

-2.00

-2.08

-1.45

0.10

0.89

  1. Simulation based on the model for mild cognitive impairment individuals. NP-Batt, Neuro-Psychological Battery.