Infant mortality among ethnic immigrant groups.

The numerically large and growing Indochinese refugee population has been little studied with respect to infant health. It is a population that is young, is experiencing high fertility, late onset of prenatal care, and is characterized by low socioeconomic status. Thus, it presents a high risk profile with respect to infant mortality. Using linked birth and infant death records for the San Diego metropolitan area for the period 1978-85 infant mortality rates (IMRs) were calculated for Indochinese refugee groups from Vietnam, Laos and Cambodia in comparison with other ethnic groups. We found, surprisingly, that Indochinese refugees as a group had an IMR below that for non-Hispanic Whites and substantially below that for Blacks. In general, IMRs for Indochinese refugees were similar to those for other Asian groups. These findings held even after controlling for birth weight and onset of prenatal care. The timing and causes of death suggest areas in which the IMR could drop to even lower levels with improved community outreach programs, especially among refugee groups from Laos (Hmong and Lao) who exhibited the unusual pattern of higher post-early neonatal than early neonatal mortality.