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Table 3 Correlation between log-transformed of epidemiologic parameters and possible confounders in selected countries with GNI-per capita more than $15,000

From: The morbidity and mortality of COVID-19 are correlated with the Ile105Val glutathione S-transferase P1 polymorphism

Variables Log-Prevalence Log-Mortality Log-Fatality
  r P r P r p
Log-GNI per capita 0.527 0.001 0.353 0.041 − 0.084 0.637
Log-number of COVID-19 diagnostic tests performed (per 106 people) 0.541 0.001 0.261 0.136 − 0.230 0.190
Life expectancy at birth (years) 0.141 0.426 0.240 0.171 0.191 0.278
Density of medical doctors (per 104 people) 0.469 0.005 0.461 0.006 0.139 0.434
Density of nursing and midwifery personnel (per 104 people) 0.243 0.166 0.172 0.332 − 0.030 0.866
  1. Degree of freedom (df) for all correlations is 32