AGFI	Adjusted Goodness of Fit Index
ANOVA	One-way Analysis of Variance
CFA	Confirmatory Factor Analysis
CFI	Comparative of Fit Index
CVI	Content validity index
CVR	Content Validity Ratios
DF	Degree of Freedom
EFA	Exploratory Factor Analysis
GFI	Goodness of Fit Index
IFI	Incremental Fit Index
KMO	Kaiser–Meyer–Olkin
NFI	Normed Fit Index
QIS	Social Isolation Questionnaire
RMSEA	Root Mean Square Error of Approximation
SD	Standard Deviation
SPSS	Statistical Package for the Social Sciences
SRMR	Standardized Root Mean Square Residual
TLI	Tucker–Lewis Index
ULS-8	University of California Loneliness Scale-Short Form
WHO	World Health Organization