To ensure a reliable estimate of the resident population at any time, HDSSs collect information on three core events: births, deaths, and migration.
In medical schools, only hospital-based intrapartum clinical practicums are incorporated into the required core curricula, whereas birth centre and home birth practicums are rarely offered and never required.
The NUHDSS has been operational since January 2003 and data on core demographic events (birth, death, in-migration and out-migration) are collected from members of about 22,000 households in the defined geographic areas, and updated every four months during routine Demographic Surveillance System (DSS) rounds.
Since each of the IntFams must have at least one protein member from one of the three core species to assess birth, births could not be calculated for nodes with lineages that lack a core species.
The core crew who birthed Boomerang was just five people.
Since January 2003, data on core demographic events (births, deaths, in- and out-migrations) have been collected and updated every 4 months during routine Health and Demographic Surveillance System (HDSS) rounds.
We provide preliminary evidence that, independent of stress in adulthood, childhood stress of specific core characteristics may shape birth timing, with cortisol elevation as a biological mediator.
As part of the activities of the NUHDSS, data on individual and household core demographic events including birth, death, in-migration, and out-migration are collected at four-monthly intervals known as data collection rounds.
However, we are uncommitted to whether such a mechanism is part of the core endowment present at birth or is a product of increasing specialization that occurs with development.
The Birth Centre was staffed by a core team of midwives, managed by the Lead Midwife for Normal Birth, assisted by maternity support workers and housekeeping staff.
