Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.52160 -0.08593  0.00356  0.08534  0.38282 

Coefficients:
                    Estimate Std. Error t value    Pr(>|t|)    
(Intercept)          0.60393    0.11386   5.304 0.000000492 ***
xCaribbean          -0.15430    0.12730  -1.212      0.2277    
xCentral America    -0.13744    0.12910  -1.065      0.2891    
xCentral Asia       -0.22765    0.14699  -1.549      0.1240    
xEastern Africa     -0.17060    0.12172  -1.402      0.1635    
xEastern Asia       -0.16649    0.13945  -1.194      0.2347    
xEastern Europe      0.11512    0.12587   0.915      0.3622    
xMelanesia          -0.27519    0.13945  -1.973      0.0506 .  
xMicronesia         -0.32134    0.16102  -1.996      0.0481 *  
xMiddle Africa      -0.23709    0.13147  -1.803      0.0737 .  
xNA                  0.18059    0.19721   0.916      0.3616    
xNorthern Africa    -0.34394    0.13945  -2.466      0.0150 *  
xNorthern America   -0.21342    0.16102  -1.325      0.1874    
xNorthern Europe     0.17703    0.12472   1.419      0.1583    
xPolynesia          -0.06369    0.16102  -0.396      0.6931    
xSouth America       0.03043    0.12910   0.236      0.8141    
xSouth-Eastern Asia -0.29663    0.12730  -2.330      0.0214 *  
xSouthern Africa    -0.16463    0.14699  -1.120      0.2648    
xSouthern Asia      -0.31467    0.13147  -2.393      0.0182 *  
xSouthern Europe     0.05746    0.12298   0.467      0.6412    
xWestern Africa     -0.25693    0.12172  -2.111      0.0368 *  
xWestern Asia       -0.20224    0.12230  -1.654      0.1007    
xWestern Europe      0.12843    0.12730   1.009      0.3150    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.161 on 126 degrees of freedom
Multiple R-squared:  0.5463,	Adjusted R-squared:  0.467 
F-statistic: 6.895 on 22 and 126 DF,  p-value: 0.0000000000004028