Table 3 Spearman correlations across cognitive domains and summary scores within and between instruments

CDR-QDS (n = 34)

Memory

Orientation

Judgment

Community affairs

Home and hobbies

Personal care

Summary score

 Orientation

0.68

 Judgment and problem solving

0.69

0.85

 Community affairs

0.65

0.80

0.87

 Home and hobbies

0.65

0.62

0.85

0.81

 Personal care

0.69

0.68

0.90

0.87

1.00

 Summary score

0.91

0.70

0.81

0.80

0.75

0.77

CDR-IDS (n = 22)

Memory

Orientation

Judgment

Community affairs

Home and hobbies

Personal care

Sum of boxes

 Orientation

0.45

 Judgment and problem solving

0.54

0.59

 Community affairs

0.60

0.84

0.74

 Home and hobbies

0.43

0.48

0.39

0.64

 Personal care

0.58

0.59

0.50

0.74

0.62

 Sum of boxes

0.77

0.50

0.57

0.53

0.71

0.70

 Global score

0.87

0.60

0.48

0.57

0.47

0.72

0.87

CDR-IDS

Memory

Orientation

Judgment

Community affairs

Home and hobbies

Personal care

Summary score

 Memory

0.66

0.62

0.48

0.60

0.45

0.43

0.51

 Orientation

0.70

0.45

0.53

0.48

0.68

0.66

0.60

 Judgment and problem solving

0.53

0.35

0.44

0.40

0.59

0.57

0.41

 Community affairs

0.60

0.65

0.68

0.63

0.83

0.81

0.54

 Home and hobbies

0.42

0.66

0.92

0.73

0.75

0.74

0.66

 Personal care

0.52

0.35

0.66

0.63

0.87

0.87

0.63

 Sum of boxes

0.61

0.51

0.69

0.54

0.61

0.61

0.69

 Global score

0.69

0.48

0.53

0.51

0.60

0.59

0.66