Validation Data : P-Cog Exam

Figure 1

P-Cog (Philadelphia cognitive)

Raw scores for AD (series 1), MCI (series 2), and normal (series 3). Cut points appear to be >25, MCI and normal.

Figure 2

MoCA (Montreal Cognitive Assessment testing)

Raw scores for AD (series 1), MCI (series 2), and normal (series 3).

Descriptive statistics
There were no significant differences in age (p-value: 0.4223), or sex distribution (p-value: 0.09413) between the three diagnostic categories in the sample (Table 1). Educational attainment was nominally significant (p-value: 0.015), approximately 15% fewer of the cognitively impaired subjects reported continuing education past high school compared with the two other categories.

Table 1: Age, education, and sex by diagnostic category
Diagnosis n Age (sd) Completed education >12 (%) FEMALE n (%)
Cognitive impairment 109 75.3 (± 9.68) 62.4% 42%
Mild cognitive impairment 70 72.3 (±10.15) 77.2% 48.5%
No cognitive impairment 73 74.46(± 9.14) 78% 54.7%