A large sheep dataset including ewe and progeny records from 1982 through to 2006 was used in the present study. The data included the variables: sex of lamb, birth rank, weaning weight, year born and dam and sire. The aim was to firstly, determine if the age of the ewe’s dam, or the birth rank of the ewe affected her lifetime performance and secondly, to determine in twin-born lambs if the sex...

The data were collected from various hospitals and nursing homes in Durban, Pietermaritzburg, and Capetown, as shown below: 3,165 European babies from two private nursing homes in Durban. 1,057 coloured (i.e. half-caste)t babies from a mission hospital in Durban, and two provincial hospitals, one in Capetown and one in Pietermaritzburg. 2,188 Bantu babies from a mission hospital in Durban. 1,39...

in an attempt to investigate the relationship of birth rank and family size with the incidence of neurosis in an iranian culture, case notes of 1029 schizophrenic patients as (497 males and 532 females) referred to psychiatric clinic for insured workers were studied. the incidence of neurasis appeared to be significantly more frequent among the first-half position of birth  rders in the familie...

OBJECTIVE The purpose of this work was to identify risk factors for deformational plagiocephaly within 48 hours of birth and at 7 weeks of age. PATIENTS AND METHODS This was a prospective cohort study in which 380 healthy neonates born at term in Bernhoven Hospital in Veghel were followed at birth and at 7 weeks of age. Data regarding obstetrics, sociodemographics, asymmetry of the skull, ant...

This paper summarizes results of simulation analyses aimed at elucidating the way in which two important dimensions of female rank orders-nepotism and age-gradedness-are affected by variation in individual strategies of rank acquisition on the one hand and by variation in population-wide demographic parameters (eg, birth rate, death rate, etc) on the other. Female rank orders in simulated prima...

BACKGROUND Birth weight is negatively associated with cardiovascular diseases and diabetes, but the associations are less well-established in developing populations where birth weight is often unavailable. We studied the association of birth weight and cardiovascular risk, using birth rank as an instrumental variable, in Southern China. METHODS We used published data on birth weight by birth ...

OBJECTIVE To assess factors associated with utilization of maternal health services (MHS) among women giving birth in Haiti from 2007 - 2012. METHODS Observational data derived from the 2012 Haiti Mortality, Morbidity and Service Use Survey are analyzed. Multilevel analytic methods are used to assess factors associated with use of antenatal services and skilled birth attendance (SBA). RESUL...