1.Galobardes B, Shaw M, Lawlor DA, Lynch JW, Davey Smith G: Indicators of socioeconomic position (part 1). J Epidemiol Community Health 2006, 60(1):7–12.
2.Michael S. Kramer, Louise Se guin, Goulet JLaL: Socio-economic disparities in pregnancy outcome: why do the poor fare so poorly? Paediatric and Perinatal Epidemiology 2000, 14:194–210.
3.Joseph KS, Liston RM, Dodds L, Dahlgren L, Allen AC: Socioeconomic status and perinatal outcomes in a setting with universal access to essential health care services. Canadian Medical Association Journal 2007, 177(6):583–590.
4.Silva LM, Marianne Coolmana, Eric A. P. Steegers, Vincent W. V. Jaddoe, Henrie¨ tte A. Moll, Albert Hofman, Mackenbach JP, Raat aH: Low socioeconomic status is a risk factor for preeclampsia: the Generation R Study. Journal of Hypertension 2008, 26:1200–1208.
5.van den Berg G, van Eijsden M, Vrijkotte TG, Gemke RJ: Educational inequalities in perinatal outcomes: the mediating effect of smoking and environmental tobacco exposure. PLoS One 2012, 7(5):e37002.
6.Kim MK, Lee SM, Bae SH, Kim HJ, Lim NG, Yoon SJ, Lee JY, Jo MW: Socioeconomic status can affect pregnancy outcomes and complications, even with a universal healthcare system. Int J Equity Health 2018, 17(1):2.
7.Song L, Shen L, Li H, Liu B, Zheng X, Zhang L, Xu S, Wang Y: Socio-economic status and risk of gestational diabetes mellitus among Chinese women. Diabet Med 2017, 34(10):1421–1427.
8.Raisanen S, Randell K, Nielsen HS, Gissler M, Kramer MR, Klemetti R, Heinonen S: Socioeconomic status affects the prevalence, but not the perinatal outcomes, of in vitro fertilization pregnancies. Hum Reprod 2013, 28(11):3118–3125.
9.Thompson JM, Clark PM, Robinson E, D B: Risk factors for small-for-gestational-age babies: The Auckland Birthweight Collaborative Study. J Paediatr Child Health 2001, 37:369–375.
10.Campbell EE, Gilliland J, Dworatzek PDN, De Vrijer B, Penava D, Seabrook JA: Socioeconomic Status and Adverse Birth Outcomes: A Population-Based Canadian Sample. J Biosoc Sci 2017, 50(1):102–113.
11.Sow M, Racape J, Schoenborn C, De Spiegelaere M: Is the socioeconomic status of immigrant mothers in Brussels relevant to predict their risk of adverse pregnancy outcomes? BMC Pregnancy Childbirth 2018, 18(1):422.
12.Shavers VL: Measurement of Socioeconomic Status in Health Disparities Research. JOURNAL OF THE NATIONAL MEDICAL ASSOCIATION 2007, 99(9):1013–1023.
13.Paula A. Braveman, Catherine Cubbin, Susan Egerter, Sekai Chideya, Kristen S. Marchi, Marilyn Metzler, Samuel Posner: Socioeconomic Status in Health Research: One Size Does Not Fit All. JAMA 2005, 294:2879–2888.
14.Pei L, Kang Y, Zhao Y, Cheng Y, Yan H: Changes in Socioeconomic Inequality of Low Birth Weight and Macrosomia in Shaanxi Province of Northwest China, 2010–2013: A Cross-sectional Study. Medicine (Baltimore) 2016, 95(5):e2471.
15.Tu S, Wang AL, Tan MZ, Lu JH, He JR, Shen SY, Wei DM, Lu MS, Au Yeung SL, Xia HM et al: Family socioeconomic position and abnormal birth weight: evidence from a Chinese birth cohort. World J Pediatr 2019.
16.Educational Statistics in 2018 [http://en.moe.gov.cn/documents/statistics/2018/national/index_1.html]
17.Li X, Lu J, Hu S, Cheng KK, De Maeseneer J, Meng Q, Mossialos E, Xu DR, Yip W, Zhang H et al: The primary health-care system in China. The Lancet 2017, 390(10112):2584–2594.
18.Huang S, Mo TT, Norris T, Sun S, Zhang T, Han TL, Rowan A, Xia YY, Zhang H, Qi HB et al: The CLIMB (Complex Lipids In Mothers and Babies) study: protocol for a multicentre, three-group, parallel randomised controlled trial to investigate the effect of supplementation of complex lipids in pregnancy, on maternal ganglioside status and subsequent cognitive outcomes in the offspring. BMJ Open 2017, 7(10):e016637.
19.Allison PD: Logistic Regression Using the SAS System: Theory and Application: SAS Publishing; 1999.
20.Nwaru BI, Klemetti R, Kun H, Hong W, Yuan S, Wu Z, Hemminki E: Maternal socio-economic indices for prenatal care research in rural China. Eur J Public Health 2011, 22(6):776–781.
21.Blumenshine P, Egerter S, Barclay CJ, Cubbin C, Braveman PA: Socioeconomic disparities in adverse birth outcomes: a systematic review. Am J Prev Med 2010, 39(3):263–272.
22.Culliney KA, Parry GK, Brown J, Crowther CA: Regimens of fetal surveillance of suspected large-for-gestational-age fetuses for improving health outcomes. Cochrane Database Syst Rev 2016, 4:CD011739.
23.Kc K, Shakya S, Zhang H: Gestational diabetes mellitus and macrosomia: a literature review. Ann Nutr Metab 2015, 66 Suppl 2:14–20.
24.Wang D, Hong Y, Zhu L, Wang X, Lv Q, Zhou Q, Ruan M, Chen C: Risk factors and outcomes of macrosomia in China: a multicentric survey based on birth data. The Journal of Maternal-Fetal & Neonatal Medicine 2016, 30(5):623–627.
25.Yao F, Miao H, Li B, Wu Y, Zhao Q: New birthweight percentiles by sex and gestational age in Southern China and its comparison with the INTERGROWTH–21st Standard. Sci Rep 2018, 8(1):7567.
26.Pitchaya Tuntiseranee, Jorn Olsen, Virasakdi Chongsuvivatwong, Limbutara S: Socioeconomic and work related determinants of pregnancy outcome in southern Thailand. J Epidemiol Community Health 1999, 53:624–629.
27.Ahmed P, Jaakkola JJ: Maternal occupation and adverse pregnancy outcomes: a Finnish population-based study. Occup Med (Lond) 2007, 57(6):417–423.
28.Dai LL, Mao YY, Luo XM, Shen YP: Prenatal care in combination with maternal educational level has a synergetic effect on the risk of neonatal low birth weight: new findings in a retrospective cohort study in Kunshan City, China. PLoS One 2014, 9(11):e113377.
29.J. Morrison, J. M. Najman, G. M. Williams, J. D. Keeping, Andersen MJ: Socio-Economic Status and Pregnancy Outcome: An Australian Study. British Journal of Obstetrics and Gynaecology 1989, 96(3):298–307.
30.Elizabeth M. Barbeau, Nancy Krieger, Mah-Jabeen Soobader: Working Class Matters: Socioeconomic Disadvantage, Race/Ethnicity, Gender, and Smoking in NHIS 2000. American Journal of Public Health 2000, 94(2):269–278.
31.Leung JY, Leung GM, Schooling CM: Socioeconomic disparities in preterm birth and birth weight in a non-Western developed setting: evidence from Hong Kong’s ‘Children of 1997’ birth cohort. J Epidemiol Community Health 2016, 70(11):1074–1081.