State Abortion Policies and Maternal Death in the United States, 2015‒2018

Objectives. To examine associations between state-level variation in abortion-restricting policies in 2015 and total maternal mortality (TMM), maternal mortality (MM), and late maternal mortality (LMM) from 2015 to 2018 in the United States. Methods. We derived an abortion policy composite index for each state based on 8 state-level abortion-restricting policies. We fit ecological state-level generalized linear Poisson regression models with robust standard errors to estimate 4-year TMM, MM, and LMM rate ratios and 95% confidence intervals (CIs) associated with a 1-unit increase in the abortion index, adjusting for state-level covariates. Results. States with the higher score of abortion policy composite index had a 7% increase in TMM (adjusted rate ratio [ARR] = 1.07; 95% CI = 1.02, 1.12) compared with states with lower abortion policy composite index, after we adjusted for state-level covariates. Among individual abortion policies, states with a licensed physician requirement had a 51% higher TMM (ARR = 1.51; 95% CI = 1.15, 1.99) and a 35% higher MM (ARR = 1.35; 95% CI = 1.09, 1.67), and states with restrictions on Medicaid coverage of abortion care had a 29% higher TMM (ARR = 1.29; 95% CI = 1.03, 1.61). Conclusions. Restricting access to abortion care at the state level may increase the risk for TMM.

Abortion attitudes among South Africans: findings from the 2013 social attitudes survey

Abortion is legal in South Africa, but over half of abortions remain unsafe there. Evidence suggests women who are (Black) African, of lower socioeconomic status, living with HIV, or residents of Gauteng, KwaZulu-Natal, or Limpopo provinces are disproportionately vulnerable to morbidity or mortality from unsafe abortion. Negative attitudes toward abortion have been documented in purposively sampled studies, yet it remains unclear what attitudes exist nationally or whether they differ across sociodemographic groups, with implications for inequities in service accessibility and health. In the current study, we analysed nationally representative data from 2013 to estimate the prevalence of negative abortion attitudes in South Africa and to identify racial, socioeconomic and geographic differences. More respondents felt abortion was 'always wrong' in the case of family poverty (75.4%) as compared to foetal anomaly (55%), and over half of respondents felt abortion was 'always wrong' in both cases (52.5%). Using binary logistic regression models, we found significantly higher odds of negative abortion attitudes among non-Xhosa African and Coloured respondents (compared to Xhosa respondents), those with primary education or less, and residents of Gauteng and Limpopo (compared to Western Cape). We contextualise and discuss these findings using a human rights-based approach to health.

Abortion surveillance - United States, 2007

PROBLEM/CONDITION

Since 1969, CDC has conducted abortion surveillance to document the number and characteristics of women obtaining legal induced abortions in the United States.

REPORTING PERIOD COVERED

2007.

DESCRIPTION OF SYSTEM

Each year, CDC requests abortion data from the central health agencies of 52 reporting areas (the 50 states, the District of Columbia, and New York City). This information is provided voluntarily. For 2007, data were received from 49 reporting areas. For the purpose of trend analysis, data were evaluated from the 45 areas that reported data every year during the preceding decade (1998-2007). Abortion rates (number of abortions per 1,000 women) and ratios (number of abortions per 1,000 live births) were calculated using census and natality data, respectively.

RESULTS

A total of 827,609 abortions were reported to CDC for 2007. Among the 45 reporting areas that provided data every year during 1998-2007, a total of 810,582 abortions (97.9% of the total) were reported for 2007; the abortion rate was 16.0 abortions per 1,000 women aged 15-44 years, and the abortion ratio was 231 abortions per 1,000 live births. Compared with 2006, the total number and rate of reported abortions decreased 2%, and the abortion ratio decreased 3%. Reported abortion numbers, rates, and ratios were 6%, 7%, and 14% lower, respectively, in 2007 than in 1998. Women aged 20-29 years accounted for 56.9% of all abortions in 2007 and for the majority of abortions during the entire period of analysis (1998-2007). In 2007, women aged 20-29 years also had the highest abortion rates (29.4 abortions per 1,000 women aged 20-24 years and 21.4 abortions per 1,000 women aged 25-29 years). Adolescents aged 15-19 years accounted for 16.5% of all abortions in 2007 and had an abortion rate of 14.5 abortions per 1,000 adolescents aged 15-19 years; women aged ≥35 years accounted for a smaller percentage (12.0%) of abortions and had lower abortion rates (7.7 abortions per 1,000 women aged 35-39 years and 2.6 abortions per 1,000 women aged ≥40 years). During 1998-2007, the abortion rate increased among women aged ≥35 years but decreased among adolescents aged ≤19 years and among women aged 20-29 years. In contrast to the percentage distribution of abortions and abortion rates, abortion ratios were highest at the extremes of reproductive age, both in 2007 and throughout the entire period of analysis. During 1998-2007 abortion ratios decreased among women in all age groups except for those aged <15 years. In 2007, most (62.3%) abortions were performed at ≤8 weeks' gestation, and 91.5% were performed at ≤13 weeks' gestation. Few abortions (7.2%) were performed at 14-20 weeks' gestation, and 1.3% were performed at ≥21 weeks' gestation. During 1998-2007, the percentage of abortions performed at ≤13 weeks' gestation remained stable; however, abortions performed at ≥16 weeks' gestation decreased by 13%-14%, and among the abortions performed at ≤13 weeks' gestation, the percentage performed at ≤6 weeks' gestation increased 65%. In 2007, 78.1% of abortions were performed by curettage at ≤13 weeks' gestation, and 13.1% were performed by early medical abortion (a nonsurgical abortion at ≤8 weeks' gestation); 7.9% of abortions were performed by curettage at >13 weeks' gestation. Among the 62.3% of abortions that were performed at ≤8 weeks' gestation, and thus were eligible for early medical abortion, 20.3% were completed by this method. Deaths of women associated with complications from abortions for 2007 are being investigated under CDC's Pregnancy Mortality Surveillance System. In 2006, the most recent year for which data were available, six women were reported to have died as a result of complications from known legal induced abortions. No reported deaths were associated with known illegal induced abortions.

INTERPRETATION

Among the 45 areas that reported data every year during 1998-2007, the total number, rate, and ratio of reported abortions decreased during 2006-2007. This decrease reversed the increase in reported abortion numbers and rates that occurred during 2005-2006; however, reported abortion numbers and rates for 2007 still were higher than they had been previously in 2005. In 2006, as in previous years, reported deaths related to abortion were rare.

PUBLIC HEALTH ACTION

Abortion surveillance in the United States continues to provide the data needed to examine trends in the number and characteristics of women obtaining abortions. Policymakers and program planners can use these data to guide and evaluate efforts to prevent unintended pregnancies.

Abortion surveillance - United States, 2006

PROBLEM/CONDITION

Since 1969, CDC has conducted abortion surveillance to document the number and characteristics of women obtaining legal induced abortions in the United States.

REPORTING PERIOD COVERED

2006.

DESCRIPTION OF SYSTEM

Each year, CDC requests abortion data from the central health agencies of 52 reporting areas (the 50 states, New York City, and the District of Columbia); these data are provided to CDC voluntarily. In 2006, data were received from 49 reporting areas. For the purpose of trend analysis, data were evaluated from the 46 areas that reported data every year during 1996-2006.

RESULTS

For 2006, a total of 846,181 abortions were reported to CDC. Among the 46 areas that provided data consistently during 1996-2006, a total of 835,134 abortions (98.7% of the total) were reported; the abortion rate was 16.1 abortions per 1,000 women aged 15-44 years, and the abortion ratio was 236 abortions per 1,000 live births. During the previous decade (1997-2006), reported abortion numbers, rates, and ratios decreased 5.7%, 8.8%, and 14.8%, respectively; most of these declines occurred before 2001. During the previous year (2005-2006), the total number of abortions increased 3.1%, and the abortion rate increased 3.2%; the abortion ratio was stable. In 2006, as during the previous decade (1997-2006), women aged 20-29 years accounted for the majority (56.8%) of abortions and had the highest abortion rates (29.9 abortions per 1,000 women aged 20-24 years and 22.2 abortions per 1,000 women aged 25-29 years); by contrast, abortion ratios were highest at the extremes of reproductive age. Adolescents aged 15-19 years accounted for 16.5% of all abortions in 2006 and had an abortion rate of 14.8 abortions per 1,000 adolescents aged 15-19 years; women aged >or=35 years accounted for a smaller percentage (12.1%) of abortions and had lower abortion rates (7.8 abortions per 1,000 women aged 35-39 years and 2.6 abortions per 1,000 women aged >or=40 years). During 1997-2006, the percentage of abortions and the abortion rate increased among women aged >or=35 years but declined among adolescents aged <or=19 years and among women aged 20-29 years. The majority (62.0%) of abortions in 2006 were performed at <or=8 weeks' gestation; few abortions were performed at 16-20 weeks' gestation (3.7%) or at >or=21 weeks' gestation (1.3%). During 1997-2006, the percentage of abortions performed at <or=8 weeks' gestation increased 11.7%; this increase largely was accounted for by procedures performed at <or=6 weeks' gestation, which increased 66.3%. In 2006, the greatest percentage (87.6%) of abortions were performed by curettage (including vacuum aspiration, sharp curettage, and dilation and evacuation procedures), followed by medical (nonsurgical) abortion (10.6%). Deaths of women associated with complications from abortions for 2006 are being investigated under CDC's Pregnancy Mortality Surveillance System. In 2005, the most recent year for which data were available, seven women were reported to have died as a result of complications from known legal induced abortions. No reported deaths were associated with known illegal induced abortions.

INTERPRETATION

Among the 46 areas that reported data consistently during 1996-2006, decreases in the total reported number, rate, and ratio of abortions were attributable primarily to reductions before 2001. During 2005-2006, the total number and rate of abortions increased. In 2005, as in the previous years, reported deaths related to abortions occurred only rarely.

PUBLIC HEALTH ACTION

Abortion surveillance in the United States continues to provide the data needed to examine trends in the number and characteristics of women obtaining abortions. Policymakers and program planners can use these data to guide and evaluate efforts to prevent unintended pregnancies.

Neonatal death following termination of pregnancy

The aim of this study was to look at neonatal death following termination of pregnancy in 31 cases over a six-year period in our region and to determine why this was occurring. We have highlighted two main areas of concern: failure to perform feticide in keeping with RCOG advice, and classification and registration below the clinical limit of viability. In these circumstances, appropriate counselling of the family and an antenatal plan for the postnatal care of the dying infant made prior to delivery are essential. We question the rationale of the existing classification and registration requirements below the clinical limit of viability.

The impact of age on the epidemiology of incomplete abortions in South Africa after legislative change

OBJECTIVE

In 1996 termination of pregnancy was legalised in South Africa. This article examines the impact of age on the epidemiology of incomplete abortion after legislative change. It draws comparison with the findings of a similar study undertaken in 1994.

DESIGN

Multicentre, prospective, descriptive study.

SETTING

Forty-seven public hospitals in all nine provinces.

SAMPLE

A stratified random sample of all hospitals treating gynaecological emergencies was drawn. All women of gestation under 22 weeks who presented with incomplete abortion during three weeks of data collection in 2000 were included.

METHODS

A data capture sheet completed by a clinician from the case notes.

MAIN OUTCOME MEASURES

Demographic characteristics and clinical findings on admission by age of women.

RESULTS

Overall, there was a significant increase in the proportion of cases with no signs of infection on admission (from 79.5% to 90.1%) and a significant decrease in evidence of interference on evacuation (4.5% to 0.6%) between 1994 and 2000. Substantial age differentials were seen. Women over 30 were significantly less likely than those 21-30 years or under 21 to be low severity (65.5% vs 75.2% vs 76.4%, P= 0.0087) and more likely to have offensive products (16.3% vs 6.0% vs 6.4%, P= 0.01) than the younger women.

CONCLUSIONS

Legalisation of abortion had an immediate positive impact on morbidity, especially in younger women. This is an important change as teenagers had the highest morbidity in 1994. The trend is supported by evidence from the 1999-2001 Confidential Enquiry into Maternal Deaths, which further suggested that abortion mortality dropped by more than 90% since 1994.

Risk Factors for Legal Induced Abortion–Related Mortality in the United States

OBJECTIVE

To assess risk factors for legal induced abortion-related deaths.

METHODS

This is a descriptive epidemiologic study of women dying of complications of induced abortions. Numerator data are from the Abortion Mortality Surveillance System. Denominator data are from the Abortion Surveillance System, which monitors the number and characteristics of women who have legal induced abortions in the United States. Risk factors examined include age of the woman, gestational length of pregnancy at the time of termination, race, and procedure. Main outcome measures include crude, adjusted, and risk factor-specific mortality rates.

RESULTS

During 1988-1997, the overall death rate for women obtaining legally induced abortions was 0.7 per 100000 legal induced abortions. The risk of death increased exponentially by 38% for each additional week of gestation. Compared with women whose abortions were performed at or before 8 weeks of gestation, women whose abortions were performed in the second trimester were significantly more likely to die of abortion-related causes. The relative risk (unadjusted) of abortion-related mortality was 14.7 at 13-15 weeks of gestation (95% confidence interval [CI] 6.2, 34.7), 29.5 at 16-20 weeks (95% CI 12.9, 67.4), and 76.6 at or after 21 weeks (95% CI 32.5, 180.8). Up to 87% of deaths in women who chose to terminate their pregnancies after 8 weeks of gestation may have been avoidable if these women had accessed abortion services before 8 weeks of gestation.

CONCLUSION

Although primary prevention of unintended pregnancy is optimal, among women who choose to terminate their pregnancies, increased access to surgical and nonsurgical abortion services may increase the proportion of abortions performed at lower-risk, early gestational ages and help further decrease deaths.

LEVEL OF EVIDENCE

II-2

Mortality from abortion after Roe vs Wade

The decline in mortality from abortions after Roe vs Wade was probably a result of the introduction of safer procedures for abortions, but the decline in mortality was greater for induced abortions than for other types of abortions.

[Abortion-related mortality in Brazil: decrease in spatial inequality]

Abortion is not only a major cause of obstetric hospitalization in poor countries, but it also represents the failure of the public health system to provide enough information about contraceptive methods and thus prevent pregnancies. In Brazil, the high utilization rates of health facilities due to abortions reflect the ongoing difficulties with family planning and contraception. In addition, mortality resulting from abortions serves as an indicator of the quality of abortion procedures, an important point in a country where the practice is illegal and therefore done clandestinely. In this study, we analyzed the rates of mortality resulting from abortions among women 10 to 54 years old, including women who died from spontaneous and induced abortion, from 1980 to 1995, for the various regions of the country. The information we used came from the mortality data bank of the public health system of the Ministry of Health. Population data were obtained from the Brazilian Institute for Geography and Statistics. We studied 2,602 deaths, 15% of which were due to missed abortion, spontaneous abortion, or legally permitted induced abortion. The other 85% of the deaths were due to illegal induced abortions or to nonspecified abortions. The mortality rates from abortion-related causes have steadily decreased in all the regions of Brazil, but this improvement has been unevenly distributed in the country. The region with the smallest decrease in this rate (38% over 15 years) was the Northeast. The age of women dying from abortions progressively declined over the period studied.

The influence of abortion legislation on maternal mortality

Worldwide some 20 million unsafe abortions take place each year and account for approximately 13% of all maternal mortality and serious complications associated with it, such as sepsis, hemorrhage and trauma. Only a quarter of all women in the world do not have any access to legal abortion, whereas 40% have a legal right to decide for themselves. This liberalization of abortion legislation has seen a tremendous drop in abortion-related maternal mortality. Death from unsafe abortions are almost unknown in countries where abortion is available on request. Reduction of the need for induced abortion through the provision of good family planning services should be an integral part of healthcare. Consistent use of contraception greatly reduces the need for abortion, but it cannot completely eliminate this need. Thus, it is essential that safe medical abortion services should be made available to all women in the world in cases of contraceptive failure.

Late-term abortion

Recent proposed federal legislation banning certain abortion procedures, particularly intact dilatation and extraction, would modify the US Criminal Code such that physicians performing these procedures would be liable for monetary and statutory damages. Clarification of medical procedures is important because some of the procedures used to induce abortion prior to viability are identical or similar to postviability procedures. This article reviews the scientific and medical information on late-term abortion and late-term abortion techniques and includes data on the prevalence of late-term abortion, abortion-related mortality and morbidity rates, and legal issues regarding fetal viability and the balance of maternal and fetal interests. According to enacted American Medical Association (AMA) policy, the use of appropriate medical terminology is critical in defining late-term abortion procedures, particularly intact dilatation and extraction, which is a variant of but distinct from dilatation and evacuation. The AMA recommends that the intact dilatation and extraction procedure not be used unless alternative procedures pose materially greater risk to the woman and that abortions not be performed in the third trimester except in cases of serious fetal anomalies incompatible with life. Major medical societies are urged to collaborate on clinical guidelines on late-term abortion techniques and circumstances that conform to standards of good medical practice. More research on the advantages and disadvantages of specific abortion procedures would help physicians make informed choices about specific abortion procedures. Expanded ongoing data surveillance systems estimating the prevalence of abortion are also needed.

Abortion surveillance--United States, 1993 and 1994

CONDITION

From 1991 through 1994, the number of legal induced abortions reported to CDC declined each year by < or =5% from the number reported for the preceding year.

REPORTING PERIOD COVERED

This report summarizes and reviews information reported to CDC regarding legal induced abortions obtained in the United States during 1993 and 1994. This analysis also includes recently reported abortion-related deaths that occurred during 1991.

DESCRIPTION OF SYSTEM

For each year since 1969, CDC has compiled abortion data received from 52 reporting areas: 50 states, the District of Columbia, and New York City.

RESULTS

In 1993, 1,330,414 legal abortions were reported to CDC, representing a 2.1% decrease from the number reported for 1992; in 1994, 1,267,415 abortions were reported, representing a 4.7% decrease from the number for 1993. In 1993 and 1994, the abortion ratio was 334 and 321 legal induced abortions per 1,000 live births, respectively. In 1993, the abortion rate was 22 per 1,000 women aged 15-44 years; in 1994, this rate declined to 21 per 1,000 women. Women who were undergoing an abortion were more likely to be young, white, and unmarried; most were obtaining an abortion for the first time. More than half of all abortions (52%-54%) were performed at < or =8 weeks of gestation, and approximately 88% were before 13 weeks. Approximately 15%-16% of abortions were performed at < or =6 weeks of gestation, 16% were performed at 7 weeks, and 22% at 8 weeks. Younger women (i.e., women aged < or =19 years) were more likely to obtain abortions later in pregnancy than were older women. In 1991, 12 women died as a result of induced abortion: 11 of these deaths were related to legal abortion and one to illegal abortion. During 1991, the case-fatality rate of legal induced abortion was 0.8 abortion-related deaths per 100,000 legal induced abortions.

INTERPRETATION

Since 1990, the number of abortions has declined each year. Since 1987, the abortion-to-live-birth ratio also has declined; in 1994, it was the lowest recorded since 1977. This decrease in the abortion ratio reflected the lower proportion of pregnant women who obtained an induced abortion. As in previous years, deaths related to legal induced abortions occurred rarely (i.e., approximately one death per 100,000 legal induced abortions).

ACTIONS TAKEN

The number and characteristics of women who obtain abortions in the United States should continue to be monitored so that trends in induced abortion can be assessed, efforts to prevent unintended pregnancy can be evaluated, and the preventable causes of morbidity and mortality associated with abortions can be identified and reduced.

Trying to prevent abortion

It is known that, since antiquity, women confronted with an unwanted pregnancy have used abortion as a means of resolving their dilemma. Although undoubtedly widely used in all historical ages, abortion has come to be regarded as an event preferably avoided because of the impact on the women concerned as well as considerations for fetal life. Policies to reduce numbers and rates of abortion must acknowledge certain observations. Criminalization does not prevent abortion but increases maternal risks. A society's 'openness' in discussing sexual matters inversely correlates with abortion rates. Correlation between contraceptive use and abortion is also inverse but relates most closely to the efficacy of contraceptive methods used. 'Revolution' in the range of contraceptive methods used will have an equivalent impact on abortion rates. Secondary or emergency contraceptive methods have a considerable role to play in the reduction of abortion numbers. Good sex (and 'relationships') education programs may delay sexual debut, increase contraceptive usage and be associated with reduced abortion. Finally, interaction between socioeconomic factors and the choice between abortion and ongoing pregnancy are complex. Abortion is not necessarily chosen by those least able to support a child financially.

Abortion surveillance--United States, 1992

PROBLEM/CONDITION

From 1980 through 1992, the number of legal induced abortions reported to the CDC remained stable, varying each year by < or = 5%.

REPORTING PERIOD COVERED

This report summarizes and reviews information reported to CDC regarding legal induced abortions obtained in the United States during 1992. This report also includes recently reported abortion-related deaths for 1988-1991 and an update on abortion-related deaths for 1985-1987.

DESCRIPTION OF SYSTEM

For each year since 1969, CDC has compiled abortion data received from 52 reporting areas (i.e., the 50 states, the District of Columbia, and New York City).

RESULTS

In 1992, 1,359,145 abortions were reported--a 2.1% decrease from 1991. The abortion ratio was 335 legal induced abortions per 1,000 live births, and the abortion rate was 23 per 1,000 women 15-44 years of age. Women who were undergoing an abortion were more likely to be young, white, and unmarried; most had had no previous live births and were obtaining an abortion for the first time. More than half (51%) of all abortions were performed at or before the 8th week of gestation, and 87% were before the 13th week. Approximately 14% of abortions were performed at < or = 6 weeks of gestation, 15% were performed at 7 weeks of gestation, and 22% at 8 weeks of gestation. Younger women (i.e., women < or = 19 years of age) were more likely to obtain abortions later in pregnancy than were older women. Sixteen deaths in 1988, 12 deaths in 1989, and five deaths in 1990 were associated with legal induced abortion. The case-fatality rates for 1988, 1989, and 1990, respectively, were 1.2, 0.9, and 0.3 abortion-related deaths per 100,000 legal induced abortions.

INTERPRETATION

Since 1980, the number and rate of abortions have remained relatively stable, with only small year-to-year fluctuations of < or = 5%. However, since 1987, the abortion-to-live-birth ratio has declined; in 1992, the abortion ratio was the lowest recorded since 1977. More pregnant women have been opting to carry their pregnancies to term rather than choosing to have an abortion. As in previous years, deaths associated with legal induced abortions occurred rarely (i.e., one or fewer deaths per 100,000 legal induced abortions).

ACTIONS TAKEN

The number and characteristics of women who obtain abortions in the United States should continue to be monitored so that efforts to prevent unintended pregnancy can be assessed and the preventable causes of morbidity and mortality associated with abortions can be identified and reduced.

Abortion mortality, United States, 1972 through 1987

OBJECTIVE

The aim of our study was to describe risk factors for legal abortion mortality and the characteristics of women who died of legal abortion complications for the period 1972 through 1987.

STUDY DESIGN

We reviewed abortion mortality surveillance data collected by the Division of Reproductive Health, Centers for Disease Control and Prevention, and calculated rates by various demographic and reproductive health variables using the Center for Disease Control and Prevention's abortion surveillance data as denominators. Rates are reported as legal abortion deaths per 100,000 abortions.

RESULTS

Between 1972 and 1987, 240 women died as a result of legal induced abortions. The case-fatality rate decreased 90% over time, from 4.1 deaths per 100,000 abortions in 1972 to 0.4 in 1987. Women > or = 40 years old had three times the risk of death as teenagers (relative risk 3.0, 95% confidence interval 1.5 to 6.0), and black women and those of other minority races had 2.5 times the risk of white women (relative risk 2.5, 95% confidence interval 1.9 to 3.2). Abortions at > or = 16 weeks were associated with a risk of death almost 15 times the risk of death from procedures at < or = 12 weeks' gestation. Women undergoing currettage procedures for abortion had a significantly lower risk of death than women undergoing other procedures. Whereas before 1977 infection and hemorrhage were the leading causes of death, during 1977 through 1982 anesthesia complications emerged as one of the leading causes of death and since 1983 have become the most frequent cause.

CONCLUSIONS

Although legal induced abortion-related deaths are rare events, our findings suggest that more rigorous efforts are needed to increase the safety of anesthetic methods and anesthetic agents used for abortions and that efforts are still necessary to monitor serious complications of abortion aimed at further reducing risks of death associated with the procedure.

Maternal mortality related to induced abortion in North Carolina: a historical study

A study of trends in maternal mortality from 1963 to 1992 in North Carolina shows that during the period 1973-1977, when legal abortion first became available, the maternal mortality ratio (maternal deaths per 100,000 live births) for deaths related to induced abortion was almost 85% lower than the ratio during the previous five-year period. The decrease in abortion-related mortality had a substantial impact on the overall maternal mortality ratio during this period, accounting for about 46% of the total decline in maternal deaths. After 1977, the maternal mortality ratio for induced abortion declined to less than one death per 100,000 live births, while the mortality ratio for all other obstetric causes leveled off at about 10 deaths per 100,000 live births.

Induced termination of pregnancy before and after Roe v Wade. Trends in the mortality and morbidity of women. Council on Scientific Affairs, American Medical Association

The mortality and morbidity of women who terminated their pregnancy before the 1973 Supreme Court decision in Roe v Wade are compared with post-Roe v Wade mortality and morbidity. Mortality data before 1973 are from the National Center for Health Statistics; data from 1973 through 1985 are from the Centers for Disease Control and The Alan Guttmacher Institute. Trends in serious abortion-related complications between 1970 and 1990 are based on data from the Joint Program for the Study of Abortion and from the National Abortion Federation. Deaths from illegally induced abortion declined between 1940 and 1972 in part because of the introduction of antibiotics to manage sepsis and the widespread use of effective contraceptives. Deaths from legal abortion declined fivefold between 1973 and 1985 (from 3.3 deaths to 0.4 death per 100,000 procedures), reflecting increased physician education and skills, improvements in medical technology, and, notably, the earlier termination of pregnancy. The risk of death from legal abortion is higher among minority women and women over the age of 35 years, and increases with gestational age. Legal-abortion mortality between 1979 and 1985 was 0.6 death per 100,000 procedures, more than 10 times lower than the 9.1 maternal deaths per 100,000 live births between 1979 and 1986. Serious complications from legal abortion are rare. Most women who have a single abortion with vacuum aspiration experience few if any subsequent problems getting pregnant or having healthy children. Less is known about the effects of multiple abortions on future fecundity. Adverse emotional reactions to abortion are rare; most women experience relief and reduced depression and distress.

Abortion surveillance--United States, 1989

Since 1980, the number of legal induced abortions reported to CDC has remained stable, varying each year by < 5%. In 1989, 1,396,658 abortions were reported--a 1.9% increase from 1988. The abortion ratio for 1989 was 346 legal induced abortions/1,000 live births, and the abortion rate was 24/1,000 women ages 15-44 years. The abortion ratio was highest for black women and women of other minority racial groups and for women < 15 years of age. Overall, women undergoing abortions tended to be young, white, and unmarried; to have had no previous live births; and to be having the procedure for the first time. Approximately half of all abortions were performed before the eighth week of gestation, and 87% were before the thirteenth week of gestation. Younger women tended to obtain abortions later in pregnancy than older women. This report also includes newly reported abortion-related deaths for 1986 and 1987, as well as an update on abortion-related deaths for the period 1978-1985. Ten deaths in 1986 and six deaths in 1987 were associated with legal induced abortion. The case-fatality rate in 1986 was 0.8 abortion-related deaths/100,000 legal induced abortions and 0.4/100,000 in 1987.

Abortion surveillance, United States, 1984-1985

Since 1983, the number of legal abortions reported to CDC increased by 5% to 1,333,521 in 1984; in 1985, that number decreased by less than 1% to 1,328,570. The national abortion rate was the same for both years-24 per 1,000 females ages 15-44 years. The abortion ratio for 1984 was 364 legally induced abortions per 1,000 live births; the ratio for 1985 was 354 per 1,000. Abortion ratios were higher among women of black and other minority races and among women younger than 15 years of age. Women undergoing legally induced abortions tended 1) to be young, white, and unmarried, 2) to have had no previous live births, and 3) to be having the procedure for the first time. Curettage was the procedure used in 96% of the reported cases. Eleven deaths were associated with legally induced abortions in 1984, and six in 1985. The case-fatality rate in 1985 was 0.5 deaths per 100,000 legally induced abortions, down from the 0.8 per 100,000 reported in 1983 and 1984. Overall, since 1980, the numbers and rates of abortion have had only slight year-to-year fluctuations. The steady increase in the percentage of repeat abortions since 1972 reflects the ongoing availability of legal abortions. Since the beginning of CDC's abortion mortality surveillance, the number of deaths related to legal abortions has decreased 75%, from 24 deaths in 1972 to six deaths in 1985.

Analysis of surveillance data with Poisson regression: a case study

One way to examine the ability of a statistical technique to detect changes in surveillance data is to analyse data sets with known changes and observe how accurately these changes can be detected. The elimination of restrictions on legal abortions should have reduced mortality associated with abortions, particularly mortality associated with illegal abortions. The sensitivity of Poisson regression to detect changes in abortion associated mortality from 1962 to 1984 was assessed for the entire United States of America and for specific states. Although it is clear that this change occurred using data from the entire United States, only the largest of the individual state data sets examined (370 events over 23 years) consistently demonstrated the expected pattern. Inconsistent patterns were found in data sets from two states with between one-fourth and one-half this number of events. The legal change was not detected at all in three states with a small number of events (1 event per year or less). From this case study, a minimum of two or three events per year seems to be necessary before Poisson regression can detect outliers. Comparisons of the four tests used suggest that tests based on model deviance are superior to tests based on comparison of observed and expected number of events.

[Reproductive mortality in Switzerland between 1952 and 1982]

Reproductive mortality includes mortality attributable to pregnancy and childbirth and its sequelae, termination of pregnancy and contraception. The latter is mainly due to an increase of cardiovascular diseases in oral contraceptive users. An estimate of reproductive mortality in Switzerland is based on available figures on cardiovascular mortality, smoking and use of oral contraceptives. The reproductive mortality has been steadily declining since 1952 in the age group of 15-34, a stagnation of this risk can be observed for women over 35 since 1962. Theoretically this stagnation might be due to the use of oral contraceptives and an increase in smoking.

Legal abortion mortality and general anesthesia

Legal abortion-related mortality as reported to the Centers for Disease Control declined eightfold between 1972 and 1981. However, the causes of legal abortion mortality have changed over time. We reviewed all legal abortion-related deaths that occurred between 1972 and 1985 in the United States. We found that, although the absolute number of legal abortion-related deaths caused by general anesthesia complications did not increase, the proportion of such deaths increased significantly, from 7.7% between 1972 and 1975 to 29.4% between 1980 and 1985. Women who died of general anesthesia complications did not differ by age, presence of preexisting medical conditions, or type of facility from women who died of other causes. However, the proportion of deaths from general anesthesia complications was significantly higher among women of black and other races, women obtaining abortions during the first trimester, and women obtaining abortions in the Northeast. Our results indicate that at least 23 of the 27 deaths were due to hypoventilation and/or loss of airway resulting in hypoxia. Persons administering general anesthesia for abortion must be skilled in airway management as well as the provision of general anesthesia.

Legal abortion mortality in the United States: 1972 to 1982

Between 1972 and 1982, 186 women died as a result of legal abortion in the United States. The overall death rate resulting from legal abortion dropped nearly fivefold, from 4.1 per 100,000 abortions in 1972 to 0.8 in 1982. Women who were older, black, of high parity, and had abortions at a later gestational age were at increased risk of death throughout the 11 years of surveillance. During this period, the death rate decreased for abortions at all stages of gestation; the greatest decrease was with abortions performed during the second trimester. For the entire interval, mortality rates were highest for abortions performed by hysterotomy or hysterectomy and lowest for abortions performed by curettage. Before 1977, the most common causes of abortion-related death were infection, hemorrhage, and general anesthesia complications, respectively. Thereafter, hemorrhage became the most common cause of abortion-related death, followed in number by general anesthesia complications. Our findings suggest that there has been a marked decrease in septic legal abortion deaths, but potentially preventable deaths from general anesthesia and hemorrhage remain an important concern. Use of general anesthetics during first-trimester abortions should be carefully reviewed.

Cluster of abortion deaths at a single facility

This report describes a cluster of four abortion-related deaths at a single facility from 1979 to 1983. The deaths followed curettage abortions at eight to 18 weeks' gestation. One death was attributed to a prolapsed mitral valve, and one was attributed to spontaneous ventricular fibrillation. Two deaths, which occurred within three weeks of each other, were caused by hemorrhage from uterine perforation. The person who allegedly performed the last two abortions was not licensed to practice medicine, nor was he under the supervision of a licensed physician. The estimated death-to-case rate at this facility (57 per 100,000 abortions) is significantly higher than the national rate (1.2 per 100,000 abortions, P less than .001). To prevent such situations, prompt treatment of abortion complications and community-based surveillance of serious morbidity should be performed.

Deaths due to sexually transmitted diseases. The forgotten component of reproductive mortality

Reproductive mortality has three principal components: deaths related to pregnancy, contraception, and sexually transmitted diseases (STDs). The last component is usually overlooked. In 1955, deaths due to STDs constituted a minimum of 32% of all reproductive mortality in the United States; in 1965 and 1975, the percentages were 32% and 20%, respectively. Pelvic inflammatory disease and syphilis account for most deaths due to STDs. In 1979, the mortality rate due to pelvic inflammatory disease was 0.29 deaths per 100,000 women aged 15 to 44 years; the corresponding figure for syphilis was 0.17. If cervical cancer is viewed as an STD, then deaths due to this cause alone (approximately 6,800 per year) would far outnumber deaths due to all other reproductive causes combined. Surveillance of reproductive mortality in the United States should be expanded to encompass deaths due to STDs.

Trends in induced legal abortion morbidity and mortality

Abortion mortality in the USA experienced an eight-fold decline between 1972 and 1981, with the greatest decline occurring after 1975. The risk for all groups of women declined, but the decline was greater for some groups than for others. When both changing risk for a given characteristic and changing prevalence of that characteristic were examined, it appears that the declining mortality rates are largely due to a downward shift in the gestational ages at which abortions are obtained and the increased use of D&E for abortions at 12 gestational weeks or later. Although morbidity data analogous to the mortality data are not available, analysis of morbidity trends from three large multicentre prospective studies between 1970 and 1978 suggests that morbidity may not have declined quite as rapidly as mortality. The morbidity data, as well as giving information on cause-specific abortion mortality in the USA, showing dramatic declines for such causes as infection and pulmonary embolus, suggest that improved medical management of complications has contributed to declining abortion mortality in the USA.

Morbidity and mortality from second-trimester abortions

The comparative safety of methods used to perform second-trimester abortion is an important public health concern. Morbidity and mortality studies have indicated that dilation and evacuation (D&E) is safer than instillation abortion, which is safer than hysterotomy and hysterectomy. In the third phase of the Joint Program for the Study of Abortion, the adjusted relative risk of serious complications associated with the intraamniotic instillation of urea and prostaglandin F2 alpha (the safest abortifacient regimen) was 1.9 times that associated with D&E (95% confidence interval, 1.2-3.1). An analysis of abortion mortality in the United States from 1972 to 1981 revealed a death-to-case rate of 4.9 per 100,000 abortions associated with D&E, 9.6 with instillation methods and over 60 with hysterotomy and hysterectomy. Little information exists concerning potential late sequelae of second-trimester abortion. D&E appears to be the safest method of second-trimester abortion available in the United States.

Legalized abortion: the Singapore experience

Abortion has been legal since 1970 in Singapore. This report traces the events leading to the liberalization of abortion laws and examines women's changing attitudes toward abortion, in Singapore. The method of abortion practiced by obstetricians, postabortal sterilization, and the effect of legalized abortion on the incidence of illegal abortion in the country are also examined.

Maternal deaths related to abortions in Sweden, 1931-1980

Deaths related to abortion accounted for 20% of all maternal mortality in Sweden during the period 1931-80. The risk of dying as a consequence of abortion, per 100,000 pregnancies, declined with a factor of 160 during the study period. Three main reasons for the improvement are discussed. The introduction of antibiotics reduced mortality due to illegal abortions, but during the 1950s and 1960s sepsis and air embolism resulting from illegal abortion still accounted for the bulk of the abortional mortality. Liberal legislation and abortional practice subsequently eliminated illegal abortions, and resulted in a more accurate and favorable statistical distribution of abortions by pregnancy week. This together with new technology reduced the legal abortions mortality rate to one-fiftieth over the last 30 years even though the number of legal abortions increased 7-fold.

Fatal hemorrhage from legal abortion in the United States

Deaths from hemorrhage associated with legal induced abortion should not occur. Yet hemorrhage was the third most frequent cause of death from legal abortion in the United States between 1972 and 1979. This study was undertaken to document the scope of the problem, to identify risk factors for fatal hemorrhage and to recommend ways of preventing these deaths. Deaths were identified through the CDC's nationwide surveillance of deaths from abortions; information on numbers and characteristics of women having legal abortions was obtained from CDC and the Alan Guttmacher Institute. Twenty-four women died from hemorrhage after legal abortion in the United States from 1972 to 1979, for a death-to-case rate of 0.3 deaths per 100,000 abortions (95 per cent confidence interval 0.2 to 0.5). Women who died from hemorrhage were significantly older than those who died from other causes (27.6 versus 24.4 years; p less than 0.05). Documented uterine perforation or rupture was far more frequent among women who died from hemorrhage than those who died from other causes (71 versus 8 per cent; p less than 0.001). Women who sustained uterine perforation or rupture were over 1,000 times more likely to die from hemorrhage than those who did not. Deaths from hemorrhage can be eliminated by preventing uterine trauma during abortion and by rapidly diagnosing and treating hemorrhage if it occurs.

Mortality from abortion and childbirth. Are the statistics biased?

Critics have challenged previous comparisons of mortality from legal abortion and childbirth for containing biases in the crude data that spuriously favor the safety of abortion. To evaluate this concern, we reviewed the sources of mortality data on which these comparisons are based and examined the completeness of abortion mortality statistics, the completeness of childbirth mortality statistics, and the accuracy of the denominators for both these events. We found the evidence to be consistent in two directions: (1) abortion deaths appear to be more completely ascertained than childbirth deaths; (2) use of different denominator estimates has relatively little impact on the comparison. From this evidence, we conclude that the crude data are biased in a direction that overestimates the abortion risks for the women relative to the risks of childbearing.

Mortality from abortion and childbirth. Are the populations comparable?

Critics have challenged previous comparisons of mortality from legal abortion and childbirth for contrasting population groups with different clinical characteristics. They allege that most women dying from abortion were young, white, and healthy, while those dying from childbirth had serious underlying conditions. To address this question, we calculated standardized abortion and childbirth mortality rates between 1972 and 1978. We also adjusted independently for preexisting medical conditions. These adjustments for demographic and health differences between the two populations actually widened the difference in the mortality risk between abortion and childbirth. Thus, between 1972 and 1978, women were about seven times more likely to die from childbirth than from legal abortion, with the gap increasing in the more recent years.