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Table 4 Trial construct 2, N = 280 power performance by methods and scenarios with delta = 1.5, 1.85, 2.0, 2.5

From: Impact of potential modifications to Alzheimer’s disease clinical trials in response to disruption by COVID-19: a simulation study

N = 280

Effect size

lme cat

lme slp

t test

orig

Scenario 0

D = 1.5

.77

.75

.66

.66

D = 1.85

.90

.89

.82

.82

D = 2.0

.94

.92

.87

.87

D = 2.5

.99

.99

.97

.97

Scenario 1

D = 1.5

.32

.30

.15

.66

D = 1.85

.42

.40

.19

.82

D = 2.0

.46

.44

.22

.87

D = 2.5

.60

.62

.32

.97

Scenario 2

D = 1.5

.56

.51

.41

.66

D = 1.85

.71

.67

.56

.82

D = 2.0

.78

.74

.65

.87

D = 2.5

.92

.89

.82

.97

Scenario 3

D = 1.5

.59

.55

.46

.66

D = 1.85

.75

.71

.64

.82

D = 2.0

.81

.78

.72

.87

D = 2.5

.94

.92

.88

.97