Table 4 The validity of continuously distributed COPE assessment scores against clinician judgment (criterion validity - Area under ROC curve) and clinician administered Easy-Care independence score (concurrent validity – Pearson’s correlation)

Cognition

Brief CSI-D cognitive score^a

0.71 (0.61–0.80)

−0.47, p < 0.001

Combined^a

0.68 (0.58–0.78)

−0.48, p < 0.001

Nutrition

MNA—SF score^a

0.70 (0.62–0.79)

−0.34, p < 0.001

Mobility

Gait speed^a

0.63 (0.45–0.80)

−0.21, p = 0.02

Chair stand^a

0.65 (0.48–0.83)

−0.38, p < 0.001

Depression

GDS-8^b

0.73 (0.64–0.80)

0.04, p = 0.66

Behaviour

NPI severity score^b

0.72 (0.64–0.80)

0.21,p = 0.01

NPI distress score^b

0.69 (0.60–0.77)

0.28, p = 0.001

Hearing

Best ear^a

0.71 (0.62–0.80)

−0.14, p = 0.10

Worst ear^a

0.71 (0.63–0.80)

−0.12, p = 0.16