mortality is the definition of low birth weight.
what is the definition of low birth weight?
mortality
low birth weight





























low birth weight (lbw) is defined by the world health organization as a birth weight of a





























infant of 2,499 g or less, regardless of gestational age. subcategories include very low birth weight (vlbw), which is less than 1500 g (3 pounds 5 ounces), and extremely low birth weight (elbw), which is less than 1000 g (2 pounds 3 ounces). normal weight at term delivery is 2500–4200 g (5 pounds 8 ounces – 9 pounds 4 ounces).





























section::::causes.
low birth weight
on november 6, 2017 a retrospective cohort study was published in the journal of public health policy regarding birth weight outcomes in flint in the early stages of the water crisis.the study was completed using birth data from 2005 to 2015 to assess the birth weights of infants born before and after the flint, michigan water supply was changed. low birth weight was defined as a birth weight less than 2,500 grams. beginning with january 2014 conception dates, the flint, michigan population saw the incidence of low birth weight infants increase from 13.3% to 15.7%. further analysis, using other counties as controls with similar demographics during the same time period, were then assessed in order to prove these lower birth weights did not happen by chance. overall, birth weight in flint was found to be 48.9 grams less than the control group with a statistically significant 1.53% increase in incidences of low birth weight. the study also analyzed the effects of race in regards to changes in birth weights. white mothers saw a 71-gram reduction in birth weight, resulting in a 2.73% increase in low birth weight infants. there were not any statistically meaningful differences among african american infants. there were likely not enough control counties to properly assess african american birth weights separately. the main limitation of the study was that infants of flint were compared to infants of other counties. also, the birth weights after the climax of the crisis were not assessed to see if they bounced back to pre-crisis weights. increased lead consumption and stress were hypothesized to be reasons behind the increase in low birth weights, but there were likely many additional confounding factors.
flint water crisis