Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.04839 -0.01912 -0.00943  0.00890  0.29873 

Coefficients:
                      Estimate Std. Error t value Pr(>|t|)  
(Intercept)          0.0124150  0.0095341   1.302   0.1933  
xCaribbean           0.0023548  0.0117544   0.200   0.8413  
xCentral America     0.0014338  0.0110831   0.129   0.8971  
xCentral Asia        0.0329655  0.0149063   2.212   0.0273 *
xEastern Africa      0.0018150  0.0108240   0.168   0.8669  
xEastern Asia        0.0213371  0.0116768   1.827   0.0681 .
xEastern Europe      0.0233851  0.0109745   2.131   0.0335 *
xMelanesia          -0.0022913  0.0130260  -0.176   0.8604  
xMicronesia          0.0001542  0.0130260   0.012   0.9906  
xMiddle Africa       0.0065007  0.0134832   0.482   0.6299  
xNA                  0.0143955  0.0119280   1.207   0.2279  
xNorthern Africa     0.0031292  0.0144591   0.216   0.8287  
xNorthern America    0.0359827  0.0149063   2.414   0.0160 *
xNorthern Europe     0.0255156  0.0102796   2.482   0.0133 *
xPolynesia           0.0078758  0.0130260   0.605   0.5456  
xSouth America       0.0017791  0.0106011   0.168   0.8668  
xSouth-Eastern Asia  0.0078430  0.0108515   0.723   0.4701  
xSouthern Africa     0.0023354  0.0137613   0.170   0.8653  
xSouthern Asia       0.0097425  0.0116045   0.840   0.4015  
xSouthern Europe     0.0194661  0.0106199   1.833   0.0672 .
xWestern Africa      0.0043269  0.0109417   0.395   0.6926  
xWestern Asia        0.0124764  0.0116045   1.075   0.2827  
xWestern Europe      0.0181657  0.0103075   1.762   0.0785 .
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.03438 on 689 degrees of freedom
Multiple R-squared:  0.07609,	Adjusted R-squared:  0.04659 
F-statistic: 2.579 on 22 and 689 DF,  p-value: 0.0001073