Table 1:

Characteristics of analyzed geopolitical areas (n = 144)

VariablesMedian or nIQR or %
No. of cases558221–1419
Case count (per 1 000 000 inhabitants)87.631.4–193.7
Rate ratio3.562.41–4.66
Latitude (degrees)38.421.8–44.6
Temperature (°C)12.87.3–21.2
Relative humidity (%)69.060.3–76.6
Absolute humidity (g/m3)7.15.2–10.8
Altitude (m)82.516.0–274.0
Passenger flights (passengers/capita/yr)2.31.0–4.7
Urban density (1000 inhabitants/km2)3.61.8–6.2
Population (1 000 000 inhabitants)7.13.1–20.6
Percentage of inhabitants aged 65 yr or older14.08.3–17.2
Life expectancy at birth, yr7976–81
GDP (1000 USD/inhabitant)40.18.4–56.3
Health expenditure as percentage of GDP9.26.3–13.5
Infectious Disease Vulnerability Index0.870.64–0.92
Any public health intervention3826.4%
Restrictions of mass gatherings2416.7%
Social distancing106.9%
School closures2517.4%
No. of public health interventions
 2 or 3149.7%
Global region
Closest distance to established epidemic (1000 km)4.31.3–8.0
  • Note: GDP = gross domestic product, IQR = interquartile rage, USD = United States dollars.