birth cohort

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Related to birth cohort: Cohort study

birth cohort

A group of people who were born during a particular period or year.


a coming into being; the act or process of being born. See also parturition.

birth canal
the canal through which the fetus passes in birth; comprising the uterus, cervix, vagina and vulva.
birth cohort
see cohort.
birth control
a term rarely used in dealing with animals. Instead see population control, contraception.
birth defects
see congenital defects.
birth difficulties
birth injury
occurs to the fetus during birth. Includes rib fracture and meningeal hemorrhage.
birth interval
the interval between succeeding parturitions. See also calving interval.
multiple birth
the birth of two or more offspring produced in the same gestation period.
birth order
the chronological order of births in a multiple birth. May have significance in causing stillbirths if the intervals between births are prolonged because of inertia.
premature birth
expulsion of the fetus from the uterus before termination of the normal gestation period, but after independent existence has become a possibility. In humans prematurity is defined as a pregnancy of less than 37 weeks in a pregnancy normally lasting 40 weeks.
birth process
comprises maturation of the fetus, relaxation of the bony pelvis and associated ligaments, softening and relaxation of the cervix, vagina, vulva and perineum, correct disposition of the fetus, contractions of the uterine myometrium and finally the only component under voluntary control, contraction of the abdominal muscles.
birth rate
the number of births during one year for the total population (crude birth rate), for the female population (refined birth rate), or for the female population of reproductive age (true birth rate). Not a term much used with reference to animals. See calving, lambing rate.
birth size
stature, including height at withers, crown to tail head length at birth.
birth weight
the weight at birth. A significant determinant of survival in any species and of the occurrence of dystocia. See also prolonged gestation.
References in periodicals archive ?
For example, for the 1916 birth cohort postponing retirement form age 62 to age 63 yielded a small increase of $127 in Social Security wealth.
In other words, the difference in wages cannot be attributed to differences in experience or to temporary changes in the demand for teachers, This result suggests that there are real differences in quality between the 1900 and the 1950 birth cohorts.
concentrations according to birth cohort and sampling period or age), time-lag patterns (concentrations according to age and sampling period or birth cohort), or cross-sectional patterns (concentrations according to sampling period and age or birth cohort).
The aims of the birth cohort study described here have changed as the study members age, as science progresses and as policy requirements are updated.
Among the strengths of this study is that it is a longitudinal birth cohort and that the exposure to ECAT is well characterized.
In order to consider the experience of actual women, the fertility of birth cohorts can be traced through time.
Overall, birth cohort estimates matched in the interval between the two censuses give us confidence about consistent reporting on educational attainment, and thus the 1981 census figures are not plotted here.
0] user than a nondental user controlling for year of birth cohort, mean number of medical visits, mean number of lab visits, mean number of prescriptions filled, mean adjusted pharmacy charges, mean adjusted medical charges, and mean number of x-ray visits.
We propose to conduct the first multilevel cohort study of its kind that would combine biological, behavioural, and social data from before birth through adolescence for an entire population birth cohort of adolescents.
The CDC currently recommends a one-time birth cohort or age-based screening for hepatitis C virus (HCV).
This New Zealand study examined the associations between duration of breast feeding, early infant growth, and body mass index (BMI) at 30 and 35 years, in a birth cohort studied to age 35.
The study, published in Genome Research, used samples of umbilical cord tissue DNA that were taken from 237 individuals (131 Chinese, 72 Malay, 34 Indian) in the Singapore GUSTO Birth Cohort Study.