Data are evaluated for completeness nationally, provincially, and by sex in Egypt. Sources include: the 1986 census, the population and housing census, vital registration data between 1976-87, the results from other vital registration evaluation studies, and retrospective field surveys such as the 1980 Egyptian Fertility Survey (EFS), the 1984 Egyptian Contraceptive Prevalence survey (ECPS), and the 1988 Demographic and Health Survey (EDHS). Previous studies have shown a level of underregistration of deaths of 19% nationally, and the level of completeness of infant mortality rates (IMR) of 25%. Death vital statistics are evaluated and the completeness rate in death registration using Trussell's variant of Brass technique is estimated. Estimates of mortality 0-1 (0q1) years were based on the more accurate data on mortality 1-4 years (1q4) by the life table method. The death registration discussion focuses on neonatal and postneonatal ratios, the sex ratio at death, variation in IMR by governates and urban/rural, the evaluation of 1986 census data by parity and survivorship, the sex ratios of children ever born, the pattern of parity and its variations by place of residence, the proportion of children dead and variations by place of residence, cumulative fertility, the proportion dead children, and IMR, with accompanying tables. In the estimation of 1983-86, completeness rates of infant mortality registration, Trussell's technique is applied to parity and survivorship by age of the mother and duration of marriage. IMR is derived from child mortality using the life table method (UN South Asian pattern). There is evidence that the most current data are the most accurate. The completeness rate nationally in 1983 using parity and survivorship was 89%, with marginal differences by sex (90% males and 89% females) and larger differences by residence (91% urban and 85% rural total population). Kalyoubia and Menoufia governates in Lower Egypt were the most complete, while the Lower Egypt governates of Demeitta, Dakahlia, Sharkia, and Kafr-el-Sheikh had the lowest in descending order. The most complete in Upper Egypt were Aswan and Giza and the worst Qena (69%), Minya (73%), and Sohag (76%). Completeness using 1q4 rates for 1986 was 86% for males and 74% for females nationally. Urban rates were again higher at 94% for males and 81% for females than rural rates of 63% for males and 59% for females. Ismailia and Seuz governates had different completeness rates regardless of method than the evaluation, with Trussell's method considered the more accurate and with higher rates. There was consistency in the direction of completeness rates between the 2 approaches for infant mortality also