title: Survival rate of low and very low birth weight neonates in an Iranian community.
abstract: BACKGROUND
  This study aimed to assess the incidence and survival rates of neonates weighing less than 2500g for duration of the first 28 days in an Iranian community.
  
  
  METHODS
  In this prospective longitudinal study, all neonates with birth weight less than 2500g were selected from the list of all neonates born in the only public-sector referral hospital, for a six months period. The weight of neonates at birth along with some demographic variables was recorded on a checklist. A cohort of neonates with birth weight less than 2500g were followed for 28 days. Mortality within 28 days of birth was used as end point. Continuous variables were summarized using mean and 95% confidence intervals, while categorical variables were presented as ratios and percentages.
  
  
  RESULTS
  About 1750 neonates were born of which 168 neonates with birth weights less than 2500g were recorded giving a proportion of 9.6%. Of 168 neonates, 21 (12.5%) had very low birth weights (VLBW) (birth weights<1500g). Survival rates for the groups of LBW (1500<birth weights<2500g) and VLBW neonates were 98.4% and 66.6%, respectively. Regression analysis showed birth weight has, unsurprisingly, the most effect (beta= 0.501) on the survival rate among variables studied in this research.
  
  
  CONCLUSIONS
  The survival rate among VLBW births in our study is dramatically low (66.6%). Not only attempts must be made to reduce the incidence and prevalence of this problem but also we need to work on the related factors of neonates' survival rate in this community.
authors.affiliation: Dept. of Social Medicine, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.
authors.forename: R
authors.initials: R
authors.lastname: Vazirinejad
authors.forename: N
authors.initials: N
authors.lastname: Masoodpour
authors.forename: A
authors.initials: A
authors.lastname: Puyanfar
keywords: Iran; Low birth weights; Neonates; Survival rate