Objective China's economic reforms have raised concerns over rising inequalities in maternal mortality, but it is not known whether the gap across socio-economic regions has increased over time.Design A population-based, longitudinal, ecological correlation study.Setting China.Sample Records from the National Maternal and Child Mortality Surveillance System between 1996 and 2006.Methods We report levels, causes and timing of maternal deaths, and examine crude and adjusted time trends in the overall and cause-specific maternal mortality ratio in five socio-economic regions (using Poisson regression). We examine whether socioeconomic disparities have widened over time using concentration curves.Main outcome measures All-causes and cause-specific maternal mortality ratios.Results Maternal mortality (MMR) declined by 6% per year (yearly rate ratio, RR, 0.94; 95% CI 0.93-0.96). The decline was most pronounced in the wealthiest rural type-I counties (RR 0.89; 95% CI 0.85-0.93), and in the poorest rural type-IV counties (RR 0.90; 95% CI 0.82-1.00). There were declines in almost all causes of maternal death. Postpartum haemorrhage (PPH) was by far the leading cause of maternal death (32%, 997/3164). The decline in MMR was largely explained by the increased uptake of institutional births. Concentration curves suggest that wealthrelated regional inequalities did not increase over time.Conclusions China's extraordinary economic growth has not adversely affected disparities in MMR across socio-economic regions over time, but poor rural women remain at disproportionate risk. Other emerging economies can learn from China's focus on the supply and quality of maternity services along with more general health systems strengthening.Keywords China, MDG 5, MMR, socio-economic disparities, time trends.Please cite this paper as: Feng X, Zhu J, Zhang L, Song L, Hipgrave D, Guo S, Ronsmans C, Guo Y, Yang Q. Socio-economic disparities in maternal mortality in China between 1996. BJOG 2010117:1527-1536.
IntroductionThe Safe Motherhood Conference held in Nairobi 30 years ago put reduction of maternal mortality on the global health agenda. 1,2 Global campaigns focussing on this issue have accelerated, particularly since the fifth Millennium Development Goal (MDG 5) targeted a reduction in the maternal mortality ratio (MMR) by three-quarters between 1990 and 2015. (www.un.org/millenniumgoals/maternal.shtml.) 3 However, notwithstanding recent evidence, 4 progress has in general been slow. 5 China has the largest population in the world, and maternal deaths in 1990 comprised almost 4% of the world's total. 6 Progress in reducing maternal mortality in China has been impressive; 4,7-10 the MMR decreased from 95 deaths per 100 000 livebirths in 1990 to 45 deaths in 2005, 11,12 a remarkable success given the size and diversity of the country. However, economic reforms have raised Epidemiology concerns over rising inequalities, particularly in poorer regions and among rural migrants in urban settings. [13][14][15][16] Government financing as a p...