Table 5 Standardized factor loadings and model fit indices for confirmatory factor analysis final models

Behavior change model

 Dementia risk-reduction factor

  Inform lifestyle changes that might help prevent Alzheimer’s^a

0.34

0.21

0.43

  Participate in clinical trials to lower brain marker results^a

0.22

0.11

0.30

  Changes to diet

0.72

0.62

0.80

  Do more physical activity/exercise

0.77

0.78

0.77

  Changes to medications

0.63

0.60

0.62

  Changes to vitamins or herbal supplements

0.68

0.55

0.71

  Engage in activities to reduce stress

0.85

0.85

0.83

  Engage in mental or cognitive activities

0.59

0.60

0.59

 Planning factor^b

  Know more about risk of developing Alzheimer’s

0.71

0.75

0.68

  Inform lifestyle changes that might help prevent Alzheimer’s^a

0.51

0.64

0.47

  Put mind at ease if you found out your brain marker results did not indicate a higher risk for developing Alzheimer’s

0.67

0.65

0.69

  Participate in clinical trials to lower brain marker results^a

0.54

0.67

0.46

  Arrange personal affairs, such as insurance, will, or finances

0.75

0.73

0.75

  Confirm feeling already developing symptoms of Alzheimer’s

0.85

0.81

0.86

  To prepare family for possible illness in the future

0.89

0.88

0.88

  Desire to start doing things sooner than had planned

0.84

0.86

0.81

 Model fit³

  CFI

.97

.98

.96

  RMSEA

.05

.05

.06

  SRMR

.04

.04

.06

Psychological impact model

 Distress

  Upset

0.72

0.68

0.75

  Sad

0.83

0.82

0.84

  Anxious/nervous

0.80

0.78

0.82

  Worried about your risk of developing Alzheimer’s

0.81

0.83

0.80

  Uncertainty (personal risk of developing Alzheimer’s)

0.63

0.70

0.56

  Uncertainty (children/family risk of developing Alzheimer’s)

0.54

0.60

0.54

  Frustrated about lack of Alzheimer’s prevention guidelines

0.74

0.76

0.70

  Hopeless about the future

0.74

0.74

0.74

 Subjective cognitive decline

  Trouble concentrating

0.77

0.72

0.82

  Trouble remembering

0.88

0.87

0.88

  Less confident about ability to carry out daily activities

0.84

0.86

0.82

Stigma

  Concern about how results might affect insurance status

0.55

0.56

0.53

  Concern doctor might learn results and treat you differently

0.65

0.64

0.67

  Concern treated differently by others if learn results (family, friends, co-workers)

0.80

0.85

0.73

 Model fit^c

  CFI

.97

.94

.98

  RMSEA

.05

.08

.04

  SRMR

.05

.06

.05