title: The relationship between biological cognitive and psychosocial characteristics of parents and the weight of infant at the time of birth in Isfahan.
abstract: BACKGROUND
  The present study was connected in order to evaluate the relationship between biological, cognitive and psychosocial characteristics of mothers and the weight of infant at the time of birth.
  
  
  METHODS
  In order to conduct this research a sample of 910 women among recently delivered mothers of Isfahan province in 2009 were selected. From stratified sampling and cluster sampling according to the percentage of population in each of the cities of Isfahan Province was used. The data was gathered with a questionnaire prepared by the researcher in order to evaluate the biological cognitive and psychosocial characteristics of mothers, in addition to the Enrich marital satisfaction test. After collecting data, the analysis of the data was done with SPSS software in two categories of descriptive and inferential statistics by using logistic regression model.
  
  
  RESULTS
  The results showed that the prevalence of low weight infants was 9.5 percent and 38.7 percent of pregnancies was unwanted. Twenty-nine percent of mothers had marital dissatisfaction. 15/6 percent of pregnancies were below 20 years old and 22 percent was above of 35 years old. 38.9 percent of mothers were exposed to cigarette smoke. The average of weight gain during pregnancies was 9 kilograms. Thirty three percent of mothers had high blood pressure during pregnancy, 26.7 percent had history of abortion and 31.9 percent had history of bleeding. 23/1percent of women was employed during pregnancy, 19.8 percent gave twin birth and 21/1 percent of parents were relative of each other, 29.7 percent of deliveries were done in cesarean way.
  
  
  CONCLUSIONS
  The results of this study showed that severe marital dissatisfaction, abnormal blood pressure during pregnancy, being employed during pregnancy, weight gain less than 5 Kg during pregnancy, pregnancy below the age of 20 can meaning fully increase the possibility of low birth weight in infant (α=0.05). The results were consisting with the previous findings and indicated that some of the applicable benefits of this research can be recording of information about each delivery in the whole country with holding training workshops of before and during pregnancy skills by welfare organization.
authors.affiliation: Department of Psychology and Educational of Exceptional Children, Science and Research Branch Islamic Azad University, Tehran, Iran.
authors.forename: Mohammad Hassan
authors.initials: MH
authors.lastname: Talebian
authors.forename: Gholam Ali
authors.initials: GA
authors.lastname: Afrooz
authors.forename: Heidar Ali
authors.initials: HA
authors.lastname: Hooman
authors.forename: Asghar
authors.initials: A
authors.lastname: Aghaei
keywords: Low birth weight; pregnancy; prenatal care; risk factors