Estimating maternal mortality in Djibouti: an application of the sisterhood method

High maternal mortality in Jigawa State, Northern Nigeria estimated using the sisterhood method

BACKGROUND

Maternal mortality is extremely high in Nigeria. Accurate estimation of maternal mortality is challenging in low-income settings such as Nigeria where vital registration is incomplete. The objective of this study was to estimate the lifetime risk (LTR) of maternal death and the maternal mortality ratio (MMR) in Jigawa State, Northern Nigeria using the Sisterhood Method.

METHODS

Interviews with 7,069 women aged 15-49 in 96 randomly selected clusters of communities in 24 Local Government Areas (LGAs) across Jigawa state were conducted. A retrospective cohort of their sisters of reproductive age was constructed to calculate the lifetime risk of maternal mortality. Using most recent estimates of total fertility for the state, the MMR was estimated.

RESULTS

The 7,069 respondents reported 10,957 sisters who reached reproductive age. Of the 1,026 deaths in these sisters, 300 (29.2%) occurred during pregnancy, childbirth or within 42 days after delivery. This corresponds to a LTR of 6.6% and an estimated MMR for the study areas of 1,012 maternal deaths per 100,000 live births (95% CI: 898-1,126) with a time reference of 2001.

CONCLUSIONS

Jigawa State has an extremely high maternal mortality ratio underscoring the urgent need for health systems improvement and interventions to accelerate reductions in MMR.

TRIAL REGISTRATION

The trial is registered at clinicaltrials.gov ( NCT01487707 ). Initially registered on December 6, 2011.

Community Study of maternal mortality in South West Nigeria: how applicable is the sisterhood method

A significant reduction in maternal mortality was witnessed globally in the year 2010, yet, no significant reduction in the maternal mortality ratio (MMR) in Nigeria was recorded. The absence of accurate data on the numbers, causes and local factors influencing adverse maternal outcomes has been identified as a major obstacle hindering appropriate distribution of resources targeted towards improving maternal healthcare. This paper reports the first community based study that measures the incidence of maternal mortality in Ibadan, Nigeria using the indirect sisterhood method and explores the applicability of this method in a community where maternal mortality is not a rare event. A community-based study was conducted in Ibadan using the principles of the sisterhood method developed by Graham et al. for developing countries. Using a multi-stage sampling design with stratification and clustering, 3,028 households were selected. All persons approached agreed to take part in the study (a participation rate of 100%), with 2,877 respondents eligible for analysis. There was a high incidence of maternal mortality in the study setting: 1,324/6,519 (20.3%) sisters of the respondents had died, with 1,139 deaths reportedly related to pregnancy, childbirth or the puerperium. The MMR was 7,778 per 100,000 live births (95% CI 7,326-8,229). Adjusted for a published Total Fertility Rate of 6.0, the MMR was 6,525 per 100,000 live births (95% CI 6,144-6,909). Women in Ibadan were dying more from pregnancy related complications than from other causes. Findings of this study have implications for midwifery education, training and practice and for the first time provide policy makers and planners with information on maternal mortality in the community of Ibadan city and shed light on the causes of maternal mortality in the area.

High maternal mortality in rural south-west Ethiopia: estimate by using the sisterhood method

BACKGROUND

Estimation of maternal mortality is difficult in developing countries without complete vital registration. The indirect sisterhood method represents an alternative in places where there is high fertility and mortality rates. The objective of the current study was to estimate maternal mortality indices using the sisterhood method in a rural district in south-west Ethiopia.

METHOD

We interviewed 8,870 adults, 15-49 years age, in 15 randomly selected rural villages of Bonke in Gamo Gofa. By constructing a retrospective cohort of women of reproductive age, we obtained sister units of risk exposure to maternal mortality, and calculated the lifetime risk of maternal mortality. Based on the total fertility for the rural Ethiopian population, the maternal mortality ratio was approximated.

RESULTS

We analyzed 8503 of 8870 (96%) respondents (5262 [62%] men and 3241 ([38%] women). The 8503 respondents reported 22,473 sisters (average = 2.6 sisters for each respondent) who survived to reproductive age. Of the 2552 (11.4%) sisters who had died, 819 (32%) occurred during pregnancy and childbirth. This provided a lifetime risk of 10.2% from pregnancy and childbirth with a corresponding maternal mortality ratio of 1667 (95% CI: 1564-1769) per 100,000 live births. The time period for this estimate was in 1998. Separate analysis for male and female respondents provided similar estimates.

CONCLUSION

The impoverished rural area of Gamo Gofa had very high maternal mortality in 1998. This highlights the need for strengthening emergency obstetric care for the Bonke population and similar rural populations in Ethiopia.

Maternal mortality in a rural district of southeastern Tanzania: an application of the sisterhood method

BACKGROUND

Deaths from maternal causes represent the leading cause of death among women of reproductive age in most developing countries. It is estimated that the highest risk occurs in Africa, with 20% of world births but 40% of the world maternal deaths. The level of maternal mortality is difficult to assess especially in countries without an adequate vital registration system. Indirect techniques are an attractive cost-effective tool to provide estimates of orders of magnitude for maternal mortality.

METHOD

The level of maternal mortality estimated by the sisterhood method is presented for a rural district in the Morogoro Region of Southeastern Tanzania and the main causes of maternal death are studied. Information from region-specific data using the sisterhood method is compared to data from other sources.

RESULTS

The maternal mortality ratio (MMR) was 448 maternal deaths per 100,000 live births (95%CI : 363-534 deaths per 100,000 live births). Maternal causes accounted for 19% of total mortality in this age group. One in 39 women who survive until reproductive age will die before age 50 due to maternal causes. The main cause of death provided by hospital data was puerperal sepsis (35%) and postpartum haemorrhage (17%); this is compatible with the main causes reported for maternal death in settings with high levels of maternal mortality, and similar to data for other regions in Tanzania. The sisterhood method provides data comparable with others, together with a cost-effective and reliable estimate for the determination of the magnitude of maternal mortality in the rural Kilombero District.

Outcomes and effectiveness in reproductive health

Measuring reproductive health is problematic. Awareness of the problems needs to be raised both among those collecting and those using data on reproductive health. This paper discusses two major measurement questions--one related to ascertainment and the other to attribution. The first question is to what extent the observed levels and patterns of reproductive health outcomes in women are valid as opposed to artefacts of the data sources and the data collection methods? The second question is can lack of evidence of effectiveness for any reproductive health intervention ever confidently be separated into no effects vs an inability to measure effects? Determining the effectiveness of health interventions is notoriously difficult. Reproductive health may not be a case for special pleading in the competition for scarce resources, but equally it should not be a case for special standards of proof of the effectiveness of interventions--standards which have not indeed been met by many other, and yet unquestioned, health care priorities. "What works" in reproductive health should in fact be judged from at least four different perspectives: from that of women and their families, health professionals, the scientific community, and national and international policy-makers.

Maternal mortality in a Kenyan pastoralist population

OBJECTIVE

To measure maternal mortality among the Gabbra, a group of nomadic pastoralists living in a remote area of Kenya.

METHOD

As part of a survey of 851 households, information on the number of sisters of respondents who died of pregnancy-related causes was collected and the data were used to calculate maternal mortality statistics using the sisterhood (an indirect) method.

RESULTS

The maternal mortality ratio for this population was 599 deaths per 100,000 births (95% C.I. 424-775). The lifetime risk of dying around childbirth is 1 in 30, and the proportion of ever-married sisters that died under 50 years of age who died from maternal causes is 0.48 (95% C.I. 0.38-0.58).

CONCLUSION

The risk of dying of maternal causes is high in this population.

Estimating maternal mortality in rural areas of Mexico: the application of an indirect demographic method

OBJECTIVE

To measure maternal mortality levels in rural areas of Mexico.

METHODS

In a cross-sectional study, a census of 13,378 households was carried out in the municipalities of Yecapixtla and Tlaltizapan, Morelos, Mexico. Information on 10,443 subjects from 12 to 49 years old was included in the analysis. An indirect method of measuring maternal mortality--the sisterhood method--was used to estimate maternal mortality. Information about the number of sisters of the interviewees who died due to maternal causes was collected in the census. With this information, estimates of maternal mortality related to a period of 10-12 years before the application of the census were obtained. An innovation to the original method was the calculation of a confidence interval for the estimated maternal mortality rate (MMR).

RESULTS

The MMR in this region was 18.68/10,000 live births (95% CI 15.79-21.58/10,000 live births). The average risk of dying due to maternal causes was 1 in 87 for women between 12 and 49 years of age.

CONCLUSIONS

The sisterhood method was effective for estimating maternal mortality in a small region, with no previous information about this indicator. The method proved to be useful for identifying a priority region for the implementation of maternal mortality reduction programs. Furthermore, the method was particularly convenient since it was applied as part of a multipurpose survey.

Assessment of maternal mortality in Tanzania

OBJECTIVE

To assess maternal mortality.

DESIGN

Prospective community-based survey, a sisterhood method survey and hospital data.

SETTING

The study was performed in communities in a rural area in Northwestern Tanzania and the local district hospital.

RESULTS

Four hundred and forty-seven pregnant women in the community survey were followed up as far as six weeks after delivery; there were 2865 respondents in the sisterhood survey; the hospital study involved 7526 deliveries. Maternal morality ratios derived from the prospective community-based survey, the sisterhood method survey and hospital data analysis were 241, 297, and 845 per 100,000 live births, respectively.

CONCLUSIONS

Hospital data tend to overestimate maternal mortality in these communities. The sisterhood method is easier and more convenient than a prospective community-based study.

Improving mortality data in South Africa: review of next of kin statements to determine cause of death in police certification

STUDY OBJECTIVE

The study aimed to improve mortality data by finding ways of reducing the large number of deaths certified as being from "ill-defined" causes (ICD 780-798) in South Africa. This problem is attributable to the absence of cause of death information in many cases where the police issue the death certificate.

DESIGN AND SETTING

A total of 600 consecutive death certification records at the Salt River State Mortuary, Cape Town were reviewed.

MEASUREMENTS AND MAIN RESULTS

Altogether 347 (58%) deaths were from unnatural causes, 111 (18%) were certified by a doctor, 83 (14%) were certified as being the result of natural causes after a necropsy, and 59 (10%) were certified by the police as being from natural causes. Analysis of sworn statements obtained from the next of kin of all those certified dead by the police rather than a doctor provided a clear cause of death in 72.9%, and a history of recent contact with health services (less than one week previously) in 47.5%. All infants certified dead by the police had a history consistent with diarrhoeal disease.

CONCLUSIONS

The method of death certification may be an indicator of access to health care and reviewing sworn statements to determine the cause of death should improve the quality of mortality data in the developing world.

Using routine surveys to measure mortality: a tool for programme managers

Aid donors and recipients have begun to demand timely, population-based information for programme planning and for measuring health programme performance. Results from trials in Jordan, Syria, Djibouti and People's Democratic Republic of Yemen show that widely-used routine surveys for estimating vaccination coverage can be adapted to collect data on health indicators such as child and maternal mortality. Estimation methods must be robust and fieldwork well-supervised. Adding questions about total children ever born and surviving, the survival of the preceding birth, and the survival of sisters to such surveys, population-based estimates of the trend and recent level of childhood mortality and of the lifetime risk of maternal death can be obtained. These trials indicate that the need to monitor selected health indicators could be met through inexpensive, low-technology surveys.