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Table 3 Variance Inflation Factor (VIF) and tolerance of each variable by time (2020 and 2021)

From: COVID-19 trends, public restrictions policies and vaccination status by economic ranking of countries: a longitudinal study from 110 countries

Variables

2020

2021

Variance Inflation Factor

Tolerance (1/VIF)

Variance Inflation Factor

Tolerance (1/VIF)

New cases per million

3.17

0.31

2.12

0.47

New tests per thousand

2.39

0.42

2.14

0.46

Positivity rate

2.12

0.47

1.88

0.53

Stringency index

1.10

0.91

1.14

0.87

Vaccinated people per hundred

–

–

1.28

0.78

Mean

2.20

 

1.71

 
  1. Vaccination against COVID-19 was first started in December 2020, and vaccine coverage was shown only in 2021
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Archives of Public Health

ISSN: 2049-3258