. 2020 Jun 30;10(7):100. doi: 10.3390/life10070100

Table 1.

Measurement properties.

Property	Criteria
Feasibility	Percentage of missing data (should be <10%) Percentage of computable data (should be >95%)
Acceptability	Mean, median, and standard deviation similar across items (15% maximum divergence) Asymmetry and kurtosis should oscillate between −1 and 1 Floor and ceiling effect (percentage of scores in the lower and upper extremes; should be <15%)
Reliability	Internal consistency: Cronbach´s alpha (≥0.7) Stability of the measure: ICC (EQ index and EQ VAS)
Validity	Convergence: correlation between EQ index and VAS, and correlation between dimensions of EQ and assessment scales Divergence: correlation between EQ index and EQ VAS and assessment scales Internal: R² of two linear regressions between EQ index and assessment scales and EQ VAS and assessment scales

ICC: intraclass correlation coefficient; EQ index: EuroQol 5 Dimensions 3 Levels Index; EQ VAS: EuroQol Visual Analog Scale.