Perinatal mortality in twin pregnancy: An analysis of birth weight-specific mortality rates and adjusted mortality rates for birth weight distributions

To the Editor.— Evaluation of the effect of good medical care of pregnant women and newborn infants and/or the impact of birth weight distribution on crude perinatal mortality rates is based upon the use of birth weight-specific mortality rates and standardized perinatal mortality rates.1-4 We agree with the suggestion made by Hermansen and Hasan5 that all future reports on perinatal statistics should comply with the recommendations made by WHO. Moreover, meaningful comparisons of standardized perinatal mortality rates over time and place require the use of a standard birth weight distribution.

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Monitoring perinatal mortality by birth weight specific mortality rates

International Journal of Gynecology & Obstetrics ◽

10.1016/0020-7292(82)90078-9 ◽

1982 ◽

Vol 20 (3) ◽

pp. 231-235 ◽

Cited By ~ 6

Author(s):

R. Erkkola ◽

P. Kero ◽

A. Seppälä ◽

M. Grönroos ◽

L. Rauramo

Keyword(s):

Birth Weight ◽

Perinatal Mortality ◽

Mortality Rates ◽

Specific Mortality

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Perinatal mortality rates by birth weight.

BMJ ◽

10.1136/bmj.2.6103.1671 ◽

1977 ◽

Vol 2 (6103) ◽

pp. 1671-1671 ◽

Cited By ~ 3

Author(s):

F N Garratt ◽

E A Jones

Keyword(s):

Birth Weight ◽

Perinatal Mortality ◽

Mortality Rates

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Neonatal audit in the United Arab Emirates: a country with a rapidly developing economy

Eastern Mediterranean Health Journal ◽

10.26719/2000.6.1.55 ◽

2000 ◽

Vol 6 (1) ◽

pp. 55-64 ◽

Cited By ~ 1

Author(s):

A. Dawodu ◽

E Varady ◽

M. Verghese ◽

L. l. Al Gazali

Keyword(s):

Birth Weight ◽

Neonatal Mortality ◽

United Arab Emirates ◽

Autosomal Recessive ◽

Very Low Birth Weight ◽

Preterm Births ◽

Mortality Rates ◽

Low Birth Weight Infants ◽

Al Ain ◽

Specific Mortality

We aimed to determine whether birth-weight-specific mortality rates and causes of neonatal death could identify interventions needed to reduce neonatal mortality rates. Data were collected from three hospitals responsible for 99% of births in Al-Ain Medical District. There were 8083 live births weighing >/= 500 g, of which 54 [0.67%] died. The mortality rate among very low-birth-weight infants was higher in this district than from centres with more advanced neonatal technology and resources. Problems of preterm births, lethal malformations and asphyxia accounted for 95% of deaths and half of the malformations were autosomal recessive syndromes. Improved management of lower-birth-weight infants, asphyxia and genetic counselling could lead to a further decline in neonatal mortality rates

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Evaluation of Factors Affecting Perinatal Mortality in Patients with HELLP Syndrome

Gynecology Obstetrics and Reproductive Medicine ◽

10.21613/gorm.2021.1144 ◽

2021 ◽

pp. 1-8

Author(s):

REYHAN GÜNDÜZ ◽

SENEM YAMAN TUNÇ ◽

MEHMET SAİT İÇEN ◽

SABAHATTİN ERTUĞRUL ◽

TALİP GÜL

Keyword(s):

Intensive Care ◽

Birth Weight ◽

Perinatal Mortality ◽

Gestational Age ◽

Hellp Syndrome ◽

Neonatal Intensive Care ◽

Mortality Rates ◽

Apgar Scores ◽

Factors Affecting ◽

Gestational Age At Delivery

OBJECTIVE: To determine the perinatal mortality rate in patients with HELLP syndrome in our clinic and to investigate the factors affecting perinatal mortality. It also makes recommendations to reduce perinatal mortality and contributes to the literature. STUDY DESIGN: Three-hundred-and-eighty-three patients were retrospectively evaluated in this cohort study. The patients' demographic, clinical data, laboratory results, gestational week at delivery, method of delivery, neonatal birth weight, fetal gender, 1- and 5-minute APGAR scores, place of delivery, maternal morbidity, mortality rates, and perinatal mortality rates were recorded. The relationship of these factors with perinatal mortality was investigated. RESULTS: The rate of perinatal mortality was determined as 6%. Patients with HELLP syndrome who experienced perinatal mortality showed significantly lower birth weight, gestational age at delivery, and 1- and 5-minute APGAR score values (p<0.05). With respect to methods of delivery, we determined that vaginal delivery was linked to a significantly higher rate of perinatal mortality (p<0.001). Gestational age at delivery, birth weight, 1- and 5-minute APGAR scores were negatively correlated with perinatal mortality. Logistic regression revealed the APGAR score at 5 minutes as the most reliable independent predictive finding for perinatal mortality. CONCLUSION: We think that to decrease perinatal mortality rates, maternal and fetal well-being in patients with HELLP syndrome should be closely monitored and delivery and follow-up should take place at tertiary health institutions after maternal and neonatal intensive care arrangements are made. Particularly, neonates with low 5-minute APGAR scores in the postpartum evaluation of neonatal condition are recommended to be followed-up at the neonatal intensive care unit.

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Cross-State Differences in the Processes Generating Black–White Disparities in Neonatal Mortality

Demography ◽

10.1215/00703370-9510578 ◽

2021 ◽

Author(s):

Benjamin Sosnaud

Keyword(s):

Birth Weight ◽

Neonatal Mortality ◽

Very Low Birth Weight ◽

The United States ◽

Neonatal Mortality Rate ◽

Black And White ◽

The Social ◽

Weight Distributions ◽

Specific Mortality ◽

Birth Weight Distribution

Abstract The U.S. Black neonatal mortality rate is more than twice the White rate. This dramatic disparity can be decomposed into two components: (1) disparities due to differences in the distribution of birth weights, and (2) disparities due to differences in birth weight–specific mortality. I utilize this distinction to explore how the social context into which infants are born contributes to gaps in mortality between Black and White neonates. I analyze variation in Black–White differences in neonatal mortality across 33 states using 1995–2010 data. For each state, I calculate the contribution of differences in birth weight distribution versus differences in birth weight–specific mortality to the total disparity in mortality between White and Black neonates. Disparities are largely a product of different birth weight distributions between Black and White newborns (mirroring the pattern for the United States as a whole). However, in at least nine states, differences in birth weight–specific mortality make a notable contribution. This pattern is observed even among those from advantaged sociodemographic backgrounds and is driven by differences in mortality among very low birth weight neonates. This calls attention to inequality in medical care at birth as an importantcontributor to racial disparities in neonatal mortality.

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Neonatal Intensive Care and Birth Weight-Specific Perinatal Mortality in Michigan and Lorraine

PEDIATRICS ◽

10.1542/peds.91.2.464 ◽

1993 ◽

Vol 91 (2) ◽

pp. 464-469

Author(s):

Embry Martin Howell ◽

Paul Vert

Keyword(s):

Intensive Care ◽

Birth Weight ◽

Perinatal Mortality ◽

Low Income ◽

Neonatal Intensive Care ◽

Health Financing ◽

The United States ◽

Mortality Rates ◽

Birth Certificates ◽

Birth Registry

This study investigated the factors influencing use of neonatal intensive care and perinatal mortality in regions of the United States and France, two countries with similar health care systems but different approaches to health financing. The study employed birth certificates from Michigan and a birth registry from Lorraine in 1984. The study showed that geographic access and socioeconomic status were important in determining use of neonatal intensive care in both regions. Socioeconomic factors in perinatal mortality were also shown for both regions, after controlling for gestational age, birth weight, and neonatal intensive care use. In Michigan, infants of mothers with low education had higher mortality rates and in Lorraine residents of low income areas had higher mortality rates. A higher proportion of Michigan women delivered in hospitals with neonatal intensive care than in Lorraine, in all weight/gestation categories. Perinatal mortality rates were also lower in Michigan than in Lorraine, overall and within birth weight categories.

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