Call:
lm(formula = y ~ x)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.05317 -0.05316 -0.02634 -0.00613  0.49733 

Coefficients:
              Estimate Std. Error t value Pr(>|t|)  
(Intercept)   0.012440   0.015153   0.821   0.4130  
xNA          -0.006129   0.095838  -0.064   0.9491  
xnon-Annex I  0.040731   0.017657   2.307   0.0225 *
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 0.09463 on 146 degrees of freedom
Multiple R-squared:  0.03609,	Adjusted R-squared:  0.02288 
F-statistic: 2.733 on 2 and 146 DF,  p-value: 0.06835