Secular trends of macrosomia in southeast China, 1994-2005

摘要: The rate of macrosomia (birth weight≥4, 000 g) increased over the past four decades in many parts world. Macrosomia is associated not only with higher risks maternal and neonatal complications but also health adulthood. We examined trends large-for-gestational-age (LGA) births among singleton, live, term postterm (≥37 complete weeks' gestation) southeast China from 1994 to 2005 explored possible causes temporal trends. Data Perinatal Health Care Surveillance System 12 cities counties were analyzed for birth weight, LGA 2005. A total 594, 472 singleton live included. conducted multiple logistic regression analyses relate these changes pregnancy characteristics. rose 6.00% 8.49% 2000 then levelled off 7.83% Similar observed mean weight. incidence continuously 13.72% 18.08% 2000, remained relatively stable 2002 There was a decrease gestational age significant increase frequency prelabor caesarean delivery In an adjusted multivariable model, increasing net weight gain, age, height education. But they didn't fully explain increase. 2002-2005 declined after China, mainly related gain. has recent years partly due use earlier moderation