Analysis of causes of death at home and in a public hospital Capricorn District of Limpopo Province

Abstract

The objectives of the study were to examine the demographic profile and causes of death of people dying in a hospital and community; and to determine mortality rates, specifically age- and gender-specific mortality rates in a community. The study also compared causes of death assigned to hospital records with causes of death obtained from verbal autopsy reports. Methodology The data used in this thesis were collected in two phases. The first phase involved a retrospective review of all deaths that occurred in the Pietersburg/Mankweng Hospital Complex from 1st January, 2011 to 31st December, 2012. The second phase involved a community-based study using a verbal autopsyto determine cause of death in Dikgale HDSS for the same period. Results A total of 5402 deaths were reported in the hospital and 625 in the community. The majority of deaths in the hospital involved adults in the 15 to 49 year old age group, while in the community more deaths were recorded amongst adults aged 15 to 49 years of age and those in the 65+ year old age group. There were more male deaths in the hospital, while in the community a higher proportion of deaths occurred amongst females. v In children less than1 year old, the cause of death in the hospital was predominantly due to perinatal conditions, particularly preterm birth, low birth weight and birth asphyxia; while in the community, of the 5 deaths in this age group, infectious diseases were recorded as the main cause of death. Amongst children in the 1 to 4 year old age groups causes of hospital deaths were dominated by infectious diseases, injuries and malnutrition; while in the community infectious diseases were the main cause of death. Stillbirths were noted in the hospital with a stillbirth rate of 29.1/1000 deliveries. In the community no stillbirths were reported. More than half of the stillbirths were caused by unexplained intrauterine foetal causes followed by maternal hypertension in pregnancy and placenta abruption. For adults in the 15 to 49 year old age groups infectious diseases, such as HIV/AIDS and tuberculosis, were the leading causes of death in both the hospital and in the community. The proportion of deaths due to HIV/AIDS and tuberculosis was significantly greater in the community than in the hospital. Amongst adults in the 50+year old age group non-communicable diseases, particularly cardiovascular diseases and cancers were the most common causes of death. In this age group, the hospital recorded more cancer deaths than did the community; while the community recorded more cardiovascular deaths than did the hospital. vi The overall mortality rate in the community was 8.4 deaths per 1000 person-year, with more deaths occurring amongst males (8.9 deaths per 1000 person-year). The mortality rate was high amongst adults in the 65+ year old age group (48.9 deaths per 1000 person-year). When comparing cause-specific mortality between hospital cause of death notification forms and cause of death determined by verbal autopsy reviews, the same top five underlying causes of death were observed, namely: cardiovascular diseases, infectious diseases, diabetes mellitus, malignant neoplasms and respiratory infections. The agreement between causes of death reported on cause of death notification forms and cause of death as a result of a verbal autopsywas 48%. For individual causes, agreement of more than 80% was achieved between cause of death recorded on cause of death notification forms and from verbal autopsy reviews for respiratory infections, diabetes, malignancies and injuries. Infectious diseases (68.5%) and cardiovascular diseases (74.1%) achieved the lowest agreement. In other words, in only 68.5% and 74.1% respectively was the cause of death as recorded on the “cause of death notification” forms the same as the cause of death when reviewed verbally. Furthermore, 13 deaths were recorded as being due to cardiovascular diseases on the “cause of death notification” forms, however, in only 5 of these cases was the cause of death recorded as the same in the verbal autopsy report. In 21 cases cause of death was attributed to infectious diseases on the cause of death notification form, vii while in only 13 of these cases was the cause of death similarly ascribed after verbal autopsy review. Conclusion This study showed that the verbal autopsy instrument has the potential to identify causes of death in a population where deaths occur outside of health facilities. Procedures for death certification and coding of underlying causes of death need to be streamlined in order to improve the reliability of registration data. This will be achieved if medical students and trainee specialists are trained in the completion of cause of death notification forms. Foetal autopsies should be introduced at tertiary hospitals to determine the causes of stillbirths.Antenatal care education for pregnant women should be encouraged because the level of antenatal care has an influence on the health of mothers and their newborns. The government should continue to focus on improving the socio-economic status of the population, while adequate foetal monitoring by health workers may reduce neonatal deaths resulting from preterm births, low birth weight and birth asphyxia. Innovative injury prevention strategies, interventions to control infectious diseases, cancer screening and lifestyle program may reduce adult mortality.