Table 1 Applied dataset
From: Analysis of the international trade networks of COVID-19 medical products
Notation | Name | Description | Source |
|---|---|---|---|
\(\text {EXP}^{\text {2020}}_{i,j}\) | trade20 | Total export from country i to country j in 2020 (thousand USD)\(^{\dagger }\) | (a) |
\(\text {EXP}^{\text {2019}}_{i,j}\) | trade19 | Total export from country i to country j in 2019 (thousand USD)\(^{\dagger }\) | (a) |
\(x_{1}\) | contig | 1 for contiguity | (b) |
\(x_{2}\) | rta | 1 if the pair currently has an RTA | (b) |
\(z_{1,i}\) | eu_o | 1 if the origin is a EU member | (b) |
\(z_{1,j}\) | eu_d | 1 if the destination is an EU member | (b) |
\(z_{2,i}\) | wto_o | 1 if the origin is a WTO member | (b) |
\(z_{2,j}\) | wto_d | 1 if the destination is a WTO member | (b) |
\(z_{3,i}\) | gdp_o | GDP (current USD)\(^{\ddagger }\) | (b) |
\(z_{3,j}\) | gdp_d | GDP (current USD)\(^{\ddagger }\) | (b) |
\(z_{4,i}\) | gii_o | GII (score)\(^{\ddagger }\) | (c) |
\(z_{4,j}\) | gii_d | GII (score)\(^{\ddagger }\) | (c) |
\(z_{5,i}\) | covid_case_o | All reported COVID-19 cases until the end of 2020\(^{\ddagger }\) | (d) |
\(z_{5,j}\) | covid_case_d | All reported COVID-19 cases until the end of 2020\(^{\ddagger }\) | (d) |
\(d_{i,j}\) | dist | Distance between the most important cities (in terms of population)\(^{\ddagger }\) | (b) |