Abstract
Objective: To describe trends in cause specific stillbirth and neonatal mortality.
Design: Retrospective cohort study.
Setting and participants: 686 860 births in 1982–2000, to mothers resident in the Northern Region of England.
Main outcome measures: Cause specific stillbirth and neonatal mortality; rate ratios (RR) and 95% confidence intervals (CI) in 1991–2000 compared with 1982–1990.
Results: In singletons, rates of stillbirth and neonatal mortality declined over time (RR stillbirths, 0.81 (95% CI 0.76 to 0.87); RR neonatal mortality, 0.76 (95% CI 0.70 to 0.82)). Death from congenital anomalies declined substantially for both stillbirths (RR 0.52; 95% CI 0.40 to 0.68) and neonatal mortality (RR 0.58; 95% CI 0.51 to 0.67). Mortality due to intrapartum hypoxia also fell, by nearly 50% for stillbirths and 30% for neonatal deaths. There was no reduction in stillbirths due to antepartum hypoxia in babies weighing ⩾ 2500 g, or in mortality attributed to infection. In multiples, the risk of death was higher (RR stillbirths, 4.13 (95% CI 3.68 to 4.64); RR neonatal death, 7.82 (95% CI 7.13 to 8.58)). Stillbirth rates declined significantly (RR 0.71; 95% CI 0.57 to 0.89) but neonatal mortality did not (RR 0.91; 95% CI 0.77 to 1.08). There was no reduction in neonatal mortality resulting from prematurity, or in mortality from congenital anomalies.
Conclusions: There is considerable overlap in the causes of stillbirth and neonatal mortality. Future progress in reducing perinatal mortality requires better understanding of the aetiology of antepartum stillbirth, of the excess risks of prematurity facing multiple births, particularly in the light of their increasing incidence, and of strategies to prevent perinatal infection.
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Selected References
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- Abramsky L., Botting B., Chapple J., Stone D. Has advice on periconceptional folate supplementation reduced neural-tube defects? Lancet. 1999 Sep 18;354(9183):998–999. doi: 10.1016/S0140-6736(99)03248-1. [DOI] [PubMed] [Google Scholar]
- Ananth C. V., Misra D. P., Demissie K., Smulian J. C. Rates of preterm delivery among Black women and White women in the United States over two decades: an age-period-cohort analysis. Am J Epidemiol. 2001 Oct 1;154(7):657–665. doi: 10.1093/aje/154.7.657. [DOI] [PubMed] [Google Scholar]
- Cartlidge P. H., Dawson A. T., Stewart J. H., Vujanic G. M. Value and quality of perinatal and infant postmortem examinations: cohort analysis of 400 consecutive deaths. BMJ. 1995 Jan 21;310(6973):155–158. doi: 10.1136/bmj.310.6973.155. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Demissie K., Rhoads G. G., Ananth C. V., Alexander G. R., Kramer M. S., Kogan M. D., Joseph K. S. Trends in preterm birth and neonatal mortality among blacks and whites in the United States from 1989 to 1997. Am J Epidemiol. 2001 Aug 15;154(4):307–315. doi: 10.1093/aje/154.4.307. [DOI] [PubMed] [Google Scholar]
- Draper E. S., Manktelow B., Field D. J., James D. Prediction of survival for preterm births by weight and gestational age: retrospective population based study. BMJ. 1999 Oct 23;319(7217):1093–1097. doi: 10.1136/bmj.319.7217.1093. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Edozien L. C., Mayers F. N., Gowland M. R. Difficulties and dilemmas in the management of congenital anomalies in twin pregnancy. Int J Clin Pract. 1997 Jul-Aug;51(5):305–307. [PubMed] [Google Scholar]
- Embleton N. D., Northern Region's Perinatal Mortality Survey Fetal and neonatal death from maternally acquired infection. Paediatr Perinat Epidemiol. 2001 Jan;15(1):54–60. doi: 10.1046/j.1365-3016.2001.00314.x. [DOI] [PubMed] [Google Scholar]
- Frøen J. F., Arnestad M., Frey K., Vege A., Saugstad O. D., Stray-Pedersen B. Risk factors for sudden intrauterine unexplained death: epidemiologic characteristics of singleton cases in Oslo, Norway, 1986-1995. Am J Obstet Gynecol. 2001 Mar;184(4):694–702. doi: 10.1067/mob.2001.110697. [DOI] [PubMed] [Google Scholar]
- Gardosi J., Mul T., Mongelli M., Fagan D. Analysis of birthweight and gestational age in antepartum stillbirths. Br J Obstet Gynaecol. 1998 May;105(5):524–530. doi: 10.1111/j.1471-0528.1998.tb10153.x. [DOI] [PubMed] [Google Scholar]
- Glinianaia S. V., Pharoah P., Sturgiss S. N. Comparative trends in cause-specific fetal and neonatal mortality in twin and singleton births in the North of England, 1982-1994. BJOG. 2000 Apr;107(4):452–460. doi: 10.1111/j.1471-0528.2000.tb13261.x. [DOI] [PubMed] [Google Scholar]
- Glinianaia S. V., Rankin J., Renwick M. Time trends in twin perinatal mortality in northern England, 1982-94. Northern Region Perinatal Mortality Survey Steering Group. Twin Res. 1998 Dec;1(4):189–195. doi: 10.1375/136905298320566159. [DOI] [PubMed] [Google Scholar]
- Hey E. N., Lloyd D. J., Wigglesworth J. S. Classifying perinatal death: fetal and neonatal factors. Br J Obstet Gynaecol. 1986 Dec;93(12):1213–1223. doi: 10.1111/j.1471-0528.1986.tb07854.x. [DOI] [PubMed] [Google Scholar]
- Hook E. B. Rates of chromosome abnormalities at different maternal ages. Obstet Gynecol. 1981 Sep;58(3):282–285. [PubMed] [Google Scholar]
- Huang D. Y., Usher R. H., Kramer M. S., Yang H., Morin L., Fretts R. C. Determinants of unexplained antepartum fetal deaths. Obstet Gynecol. 2000 Feb;95(2):215–221. doi: 10.1016/s0029-7844(99)00536-0. [DOI] [PubMed] [Google Scholar]
- Isaacs D. Prevention of early onset group B streptococcal infection: screen, treat, or observe? Arch Dis Child Fetal Neonatal Ed. 1998 Sep;79(2):F81–F82. doi: 10.1136/fn.79.2.f81. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Joseph K. S., Kramer M. S., Marcoux S., Ohlsson A., Wen S. W., Allen A., Platt R. Determinants of preterm birth rates in Canada from 1981 through 1983 and from 1992 through 1994. N Engl J Med. 1998 Nov 12;339(20):1434–1439. doi: 10.1056/NEJM199811123392004. [DOI] [PubMed] [Google Scholar]
- Joseph K. S., Marcoux S., Ohlsson A., Liu S., Allen A. C., Kramer M. S., Wen S. W., Fetal and Infant Heath Study Group of the Canadian Perinatal Surveillance System Changes in stillbirth and infant mortality associated with increases in preterm birth among twins. Pediatrics. 2001 Nov;108(5):1055–1061. doi: 10.1542/peds.108.5.1055. [DOI] [PubMed] [Google Scholar]
- Kramer Michael S., Liu Shiliang, Luo Zhongcheng, Yuan Hongbo, Platt Robert W., Joseph K. S., Fetal and Infant Health Study Group of the Canadian Perinatal Surveillance System Analysis of perinatal mortality and its components: time for a change? Am J Epidemiol. 2002 Sep 15;156(6):493–497. doi: 10.1093/aje/kwf077. [DOI] [PubMed] [Google Scholar]
- Mastroiacovo P., Castilla E. E., Arpino C., Botting B., Cocchi G., Goujard J., Marinacci C., Merlob P., Métneki J., Mutchinick O. Congenital malformations in twins: an international study. Am J Med Genet. 1999 Mar 12;83(2):117–124. doi: 10.1002/(sici)1096-8628(19990312)83:2<117::aid-ajmg7>3.0.co;2-4. [DOI] [PubMed] [Google Scholar]
- Morris J. K., Mutton D. E., Alberman E. Revised estimates of the maternal age specific live birth prevalence of Down's syndrome. J Med Screen. 2002;9(1):2–6. doi: 10.1136/jms.9.1.2. [DOI] [PubMed] [Google Scholar]
- Neasham D., Dolk H., Vrijheid M., Jensen T., Best N. Stillbirth and neonatal mortality due to congenital anomalies: temporal trends and variation by small area deprivation scores in England and Wales, 1986-96. Paediatr Perinat Epidemiol. 2001 Oct;15(4):364–373. doi: 10.1046/j.1365-3016.2001.0379a.x. [DOI] [PubMed] [Google Scholar]
- Perinatal mortality: a continuing collaborative regional survey. Br Med J (Clin Res Ed) 1984 Jun 9;288(6432):1717–1720. doi: 10.1136/bmj.288.6432.1717. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rankin J., Glinianaia S., Brown R., Renwick M. The changing prevalence of neural tube defects: a population-based study in the north of England, 1984-96. Northern Congenital Abnormality Survey Steering Group. Paediatr Perinat Epidemiol. 2000 Apr;14(2):104–110. doi: 10.1046/j.1365-3016.2000.00246.x. [DOI] [PubMed] [Google Scholar]
- Wigglesworth J. S. Monitoring perinatal mortality. A pathophysiological approach. Lancet. 1980 Sep 27;2(8196):684–686. doi: 10.1016/s0140-6736(80)92717-8. [DOI] [PubMed] [Google Scholar]
- Wren C., O'Sullivan J. J. Survival with congenital heart disease and need for follow up in adult life. Heart. 2001 Apr;85(4):438–443. doi: 10.1136/heart.85.4.438. [DOI] [PMC free article] [PubMed] [Google Scholar]
- van der Pal-de Bruin K. M., Graafmans W., Biermans M. C. J., Richardus J. H., Zijlstra A. G., Reefhuis J., Mackenbach J. P., Verloove-Vanhorick S. P. The influence of prenatal screening and termination of pregnancy on perinatal mortality rates. Prenat Diagn. 2002 Nov;22(11):966–972. doi: 10.1002/pd.442. [DOI] [PubMed] [Google Scholar]