Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.06436 -0.02660 -0.01201  0.01533  0.23644 

Coefficients:
                      Estimate Std. Error t value Pr(>|t|)  
(Intercept)          0.0298459  0.0121809   2.450   0.0145 *
xCaribbean           0.0155428  0.0150176   1.035   0.3010  
xCentral America     0.0069669  0.0141600   0.492   0.6229  
xCentral Asia        0.0342449  0.0190445   1.798   0.0726 .
xEastern Africa      0.0246997  0.0138289   1.786   0.0745 .
xEastern Asia       -0.0186911  0.0149185  -1.253   0.2107  
xEastern Europe      0.0027605  0.0140213   0.197   0.8440  
xMelanesia           0.0005442  0.0166423   0.033   0.9739  
xMicronesia          0.0046981  0.0166423   0.282   0.7778  
xMiddle Africa       0.0175148  0.0172264   1.017   0.3096  
xNA                 -0.0188454  0.0152394  -1.237   0.2166  
xNorthern Africa     0.0016623  0.0184733   0.090   0.9283  
xNorthern America   -0.0263402  0.0190445  -1.383   0.1671  
xNorthern Europe    -0.0094162  0.0131334  -0.717   0.4736  
xPolynesia          -0.0007195  0.0166423  -0.043   0.9655  
xSouth America       0.0040358  0.0135442   0.298   0.7658  
xSouth-Eastern Asia  0.0142140  0.0138641   1.025   0.3056  
xSouthern Africa     0.0345190  0.0175816   1.963   0.0500 .
xSouthern Asia       0.0257782  0.0148261   1.739   0.0825 .
xSouthern Europe    -0.0178272  0.0135681  -1.314   0.1893  
xWestern Africa      0.0058644  0.0139793   0.420   0.6750  
xWestern Asia        0.0014366  0.0148261   0.097   0.9228  
xWestern Europe     -0.0086309  0.0131691  -0.655   0.5124  
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.04392 on 689 degrees of freedom
Multiple R-squared:  0.09868,	Adjusted R-squared:  0.0699 
F-statistic: 3.429 on 22 and 689 DF,  p-value: 0.0000002553