In this paper we analyze the macroeconomic record of "strictly dollarized" economies. In particular, we investigate whether dollarized countries have historically exhibited faster growth and lower volatility than countries with a domestic currency. We analyze this issue by using a treatment regression analysis that estimates jointly the probability of being a dollarized country, and outcome equations. Our analysis indicates that the probability of being a dollarized country depends on regional, geographical, political, and structural variables. Our results also suggest that GDP per capita growth has not been statistically different in dollarized and in non-dollarized countries. We also find that volatility has been significantly higher in dollarized than in non-dollarized economies. These results are robust to the estimation technique, and to the sample used.