This report used sex ratios to examine the consistency in the 1988 Dress Rehearsal data. As an evaluation tool, sex ratios have limited application because subgroups in the population may have sex ratios that deviate considerably from expected values. However, as a general indicator of the quality of the data, the sex ratios can point to unexpected extremities in the age-sex distribution.

The Post-Enumeration Survey (PES) produced the P-sample, the E-sample and the Dual System Estimates. Sex ratios were computed for these three data sources for different post-strata and compared with the original census enumeration. The post-stratum represents the finest level of detail for which dual system estimates are produced. The post-strata are defined by characteristics of the persons enumerated in the PES. The strata are as homogeneous as possible with respect to the census undercount.