Portuguese vs Czechoslovakian Vision Disability

The statistical analysis conducted on geographies consisting of 449,734,569 people shows a slight negative correlation between the proportion of Portuguese and percentage of population with vision disability in the United States with a correlation coefficient (R) of -0.078 and weighted average of 2.3%. Similarly, the statistical analysis conducted on geographies consisting of 368,413,881 people shows a strong positive correlation between the proportion of Czechoslovakians and percentage of population with vision disability in the United States with a correlation coefficient (R) of 0.735 and weighted average of 2.2%, a difference of 2.6%.

In terms of vision disability, the demographic groups most similar to Portuguese are Barbadian (2.3%, a difference of 0.070%), Immigrants from Trinidad and Tobago (2.3%, a difference of 0.34%), Nigerian (2.3%, a difference of 0.63%), Trinidadian and Tobagonian (2.2%, a difference of 0.84%), and Immigrants from Ghana (2.2%, a difference of 0.97%). Similarly, the demographic groups most similar to Czechoslovakians are Immigrants from El Salvador (2.2%, a difference of 0.050%), Immigrants from Thailand (2.2%, a difference of 0.14%), Slovak (2.2%, a difference of 0.27%), Immigrants from Zaire (2.2%, a difference of 0.35%), and Dutch (2.2%, a difference of 0.45%).