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. 2022 Feb 7;13:816465. doi: 10.3389/fpsyt.2022.816465

Table 2.

Internal consistency.

AD/MCI ALS CVD FTD PD MDD
QIDS-SR
Cronbach's alpha 0.69 0.70 0.70 0.74 0.74 0.68
Item-total
Sleep 0.20 0.33 0.16 0.18 0.22 0.31
Sadness 0.50 0.46 0.31 0.33 0.51 0.52
Appetite 0.19 0.53 0.35 0.56 0.26 0.30
Concentration 0.45 0.24 0.51 0.32 0.56 0.46
Self-perception 0.44 0.26 0.35 0.31 0.45 0.36
Interest 0.45 0.52 0.55 0.60 0.59 0.43
Energy 0.50 0.49 0.54 0.50 0.50 0.46
Psychomotor 0.54 0.30 0.60 0.71 0.53 0.22
GAD-7
Cronbach's alpha 0.88 0.85 0.89 0.83 0.92 0.84
Item-total
Nervous 0.65 0.70 0.78 0.78 0.78 0.66
Worry-stop 0.75 0.70 0.79 0.66 0.83 0.77
Worry too much 0.81 0.80 0.76 0.67 0.84 0.72
Relaxing 0.77 0.59 0.75 0.62 0.81 0.61
Restless 0.63 0.34 0.56 0.47 0.66 0.49
Annoyed 0.46 0.61 0.59 0.71 0.58 0.35
Afraid 0.65 0.67 0.56 0.21 0.74 0.54