Table 3 Specification of multi-item MIND component scores and creation of MIND composite score (N = 128)
Component | Initial Number of items | Items | Multi-item component scores | 11-component composite score | 2-component composite score | ||||
|---|---|---|---|---|---|---|---|---|---|
Range of inter-item correlationsa | Cronbach’s αb | Weights for simple summation | Weights for weighted summationc | Weights for simple summation | Weights for weighted summationc | ||||
Overall | With item removed | ||||||||
Cognition | 2 | Orientation Speech | 0.70 | 0.82 | – | 1 | 3.4 | ||
Feeding/swallowing | 1 | Feeding/swallowing | 1 | 2.8 | 1 | 2.8 | |||
Sleep | 5 | Sleep depth Sleep latency Awakenings Return to sleep Quality of sleep | −0.16 – 0.78 | 0.72 | 0.61 0.90 0.57 0.58 0.56 | 1 | 3.7 | ||
Skin integrity | 1 | Skin integrity | 1 | 1.0 | |||||
Oxygenation | 1 | Oxygenation | 1 | −1.8 | |||||
Cough strength | 1 | Cough strength | 1 | 3.5 | 1 | 3.5 | |||
Secretion management | 1 | Secretion management | 1 | 0.9 | |||||
Mobility | 2 | Sit to stand Stand to sit | 0.98 | 0.99 | – | 1 | 3.2 | ||
Upper limb and lower limb strength | 2 | Upper limb strength Lower limb strength | 0.89 | 0.94 | – | 1 | 2.8 | ||
Ventilator dependence | 1 | Ventilator dependence | 1 | 1.2 | |||||
Co-morbidities | 1 | Co-morbidities | 1 | 0.3 | |||||