This document discusses issues with applying a correction factor of 1.5 to maternal mortality ratio estimates for countries in the Americas region. Specifically, it notes that applying the same correction factor to countries with better vital registration systems artificially inflates their ratios, while benefiting countries with poorer registration. It also finds inconsistencies between some country estimates, suggesting the statistical model could be adjusted to better reflect differences in trends. The document questions applying a correction factor of 1.5 to countries like Argentina, Canada, Chile, Costa Rica, Cuba, Mexico, Uruguay and the US, given improvements to their registration systems.