The purpose of this methodological report is to provide an overview of the quality of the maternal and child health data collected during DHS III and MEASURE DHS+. It is important to note that this assessment is not a response to any concerns, either general or specific, raised by users of the data. It is probably fair to say that within the general community of users, there is a general sense that the data are of very high quality. Rather, it is part of a routine monitoring process. It is desirable to conduct occasional checks and comparisons on the quality of data across surveys. There have been no comprehensive assessments of these data since DHS I and DHS II.