In order to get a closer look at what is happening in different economic levels, the different countries are stratified according to their income levels. With this in mind, the results for low-income countries that have a GNI per capita of less than or equal to 1,035 US$. It is notable that there are no significant correlations between the four pairs.
Table 4. Correlations for parameters (low-income countries). |
| | | Spearman’s rho | p |
GDP | - | Incidence Rate | -.167 | .434 |
GDP | - | Mortality Rate | .051 | .812 |
GDP per Capita | - | Incidence Rate | .143 | .505 |
GDP per Capita | - | Mortality Rate | .070 | .743 |
* p < .05, ** p < .01, *** p < .001 |
The results from low-middle income countries, countries that have a GNI per capita between 1,036 US$ - 4,045 US$, are shown in the table below. The correlation between the GDP and the incidence and mortality rates of the low-middle income countries are not significant. However, the correlation between the GDP per capita of the incidence (r
s = .362, p < .011) and mortality rates (r
s = .348, p = .014) are statistically significant, with the correlation being weak.
Table 5. Correlations for parameters (low-middle income countries). |
| | | Spearman’s rho | p |
GDP | - | Incidence Rate | .019 | .896 |
GDP | - | Mortality Rate | .127 | .385 |
GDP per Capita | - | Incidence Rate | .362* | .011 |
GDP per Capita | - | Mortality Rate | .348* | .014 |
* p < .05, ** p < .01, *** p < .001 |
For the upper-middle income countries, the results of the statistical analysis are shown below. Upper middle-income countries have a GNI per capita between 4,046 US$ and 12,535 US$. As with the case for low-income countries, there is no significant correlation between the four factors mentioned below.
Table 6. Correlations for parameters (upper-middle income countries). |
| | | Spearman’s rho | p |
GDP | - | Incidence Rate | .107 | .457 |
GDP | - | Mortality Rate | .272 | .056 |
GDP per Capita | - | Incidence Rate | .112 | .437 |
GDP per Capita | - | Mortality Rate | -.001 | .993 |
* p < .05, ** p < .01, *** p < .001 |
High-income countries are countries that have a GNI per capita greater than 12,535 US$. With this in mind, the results for these countries are shown below. As with the case for the low-income and upper-middle income countries, the correlations are not statistically significant.