|US-born are those born in the 50 states and the District of Columbia. 2Foreign-born are those born outside these territories. 3Data for Asian Indians, Koreans, and Vietnamese were available for only 11 states: CA, HI, IL, MI, MO, NJ, NY, TX, VA, WA, and WV. *. 4Risk ratio: ratio of the infant mortality rate or risk for the US-born in each ethnic group to that for the corresponding immigrant group. 5Adjusted by Cox proportional hazards regression for maternal age, marital status, birth order, infant sex, plurality, maternal education, prenatal care, and smoking during pregnancy.|
Source: data derived from the 1999–2002 US National Linked Birth and Infant Death data files, see also .