The number of years it takes a population to double in size. The number of births per year for every 1,000 people. The growth rate of a population; the difference between birthrate and death rate. A system in which tradition and custom control all economic activity; exists in only a few parts of the world today. The pattern of population in a country, a continent, or the world.
Quick Links. Spina Bifida Health Care Benefits Program. The Department of Veterans Affairs (VA) provides monetary allowances, vocational training and rehabilitation and VA-financed health care benefits to certain Korea and Vietnam Veterans' birth children who have been diagnosed with spina bifida (SB).
Spina bifida is more common among whites and Hispanics, and females are affected more often than males. Although doctors and researchers don't know for sure why spina bifida occurs, they have identified some risk factors: Folate deficiency. Folate (vitamin B-9) is important to the healthy development of a baby.