Table 2.

Descriptive and goodness-of-fit dimensionality indices from the exploratory factor analysis of the 11 EPICOVID19 symptoms reported by 2703 subjects, based on the principal-component factors and Horn parallel analysis methods with an eigenvalue of >1.

Factor	Exploratory factor analysis
	Principal-component factors analysis			Horn parallel analysis
	Eigenvalue	Proportion of explained variability	Cumulative explained variability	Eigenvalue	Proportion of explained variability	Cumulative explained variability
1	5.00	89.9%	89.9%	5.48	49.8	49.8%
2	N/Aa	N/A	N/A	1.14	10.3	60.1%

^aN/A: not applicable.