ICD-Based Cause of Death Statistics Fail to Provide Reliable Data for Medical Aid in Dying.

Objectives: To evaluate the most recent developments of medical aid in dying (MAID) in Switzerland and to test the reliability of reporting this phenomenon in cause of death statistics. Methods: By reviewing the MAID cases between 2018 and 2020, we compared the diseases and conditions underlying MAID reported by the ICD-based statistics provided by the Swiss Federal Statistical Office (FSO, n = 3,623) and those provided by the largest right-to-die organization EXIT (n = 2,680). Results: EXIT reported the motivations underlying the desire for death in a mixture of disease-specific and symptom-oriented categories; the latter including, for example, multimorbidity (26% of cases), and chronic pain (8%). Symptom-oriented categories were not included in the ICD-based FSO statistics. This led to the fact that the distribution of the diseases/conditions underlying MAID differed in 30%-40% of cases between both statistics. Conclusion: In order to reliably follow developments and trends in MAID, the diseases/conditions underlying the wish to die must be accurately recorded. Current methods of data collection using the ICD classification do not capture this information thoroughly ("MAID gap"). Newly created ICD codes for MAID must include both disease-specific and symptom-oriented categories.

Conventional and assisted suicide in Switzerland: Insights into a divergent development based on cancer-associated self-initiated deaths.

BACKGROUND: We tested the hypothesis of supporters of assisted dying that assisted suicide (AS) might be able to prevent cases of conventional suicide (CS). METHODS: By using data from the Federal Statistical Office, we analyzed the long-term development of 30,756 self-initiated deaths in Switzerland over a 20-year period (1999-2018; CS: n = 22,018, AS: n = 8738), focusing on people suffering from cancer who died from AS or CS. RESULTS: While cancer was the most often listed principal disease for AS (n = 3580, 41.0% of AS cases), cancer was listed in only a small minority of CS cases (n = 832, 3.8% of CS cases). There was a significant increase in the absolute number of cancer-associated AS cases: comparing four 5-year periods, there was approximately a doubling of cases every 5 years (1999-2003: n = 228 vs.2004-2008: n = 474, +108% compared with the previous period; 2009-2013: n = 920, +94%; 2014-2018: n = 1958, +113%). The ratio of cancer-associated AS in relationship with all cancer-associated deaths increased over time to 2.3% in the last observation period (2014-2018). In parallel, the numbers of cancer-associated CS showed a downward trend only at the beginning of the observation period (1999-2003, n = 240 vs. 2004-2008, n = 199, -17%). Thereafter, the number of cases remained stable in the subsequent 5-year period (2009-2013, n = 187, -6%), and increased again toward the most recent period (2014-2018, n = 206, +10%). CONCLUSION: The assumption that, with the increasingly accessible option of AS for patients with cancer, CS suicide will become "superfluous" cannot be confirmed. There are strong reasons indicating that situations and circumstances of cancer-associated CS are different from those for cancer-associated AS.

Long-term development of assisted suicide in Switzerland: analysis of a 20-year experience (1999-2018).

AIMS OF THE STUDY: The legalisation of assisted suicide is one of the most debated topics in the field of medical ethics worldwide. In countries in which assisted suicide is not legal, public discussions about its approval also encompass considerations of the long-term consequences that such legalisation would bring, for example, how many people will use this option, from what conditions would they be suffering, would there be differences between male and female assisted suicide and which developments and trends could be expected if there were to be a marked increase of cases of assisted suicide over time? METHODS: In order to answer these questions, we present the development of assisted suicide in Switzerland over a 20-year period (1999-2018; 8738 cases) using data from the Swiss Federal Statistical Office. RESULTS: During the observation period, the number of assisted suicides rose significantly: when four 5-year periods (1999-2003, 2004-2008, 2009-2013, 2014-2018) were analysed, the number of assisted suicide cases doubled over each period compared with the preceding one (Χ = 206.7, 270.4 and 897.4; p <0.001). The percentage of assisted suicides among all deaths rose from 0.2% (1999-2003; n = 582) to 1.5% (2014-2018: n = 4820). The majority of people who chose assisted suicide were elderly, with increasing age over time (median age in 1999-2003: 74.5 years vs 2014-2018: 80 years), and with a predominance of women (57.2% vs 42.8%). The most common underlying condition for assisted suicide was cancer (n = 3580, 41.0% of all assisted suicides). Over time, assisted suicide increased similarly for all underlying conditions; however, the proportion in each disease group remained unchanged. CONCLUSIONS: It is a matter of one's viewpoint whether the rise of assisted suicide cases should be considered alarming or not. These figures reflect an interesting social development but still do not appear to represent a mass phenomenon.

Historically High Excess Mortality During the COVID-19 Pandemic in Switzerland, Sweden, and Spain.

BACKGROUND: Excess mortality quantifies the overall mortality impact of a pandemic. Mortality data have been accessible for many countries in recent decades, but few continuous data have been available for longer periods. OBJECTIVE: To assess the historical dimension of the COVID-19 pandemic in 2020 for 3 countries with reliable death count data over an uninterrupted span of more than 100 years. DESIGN: Observational study. SETTING: Switzerland, Sweden, and Spain, which were militarily neutral and not involved in combat during either world war and have not been affected by significant changes in their territory since the end of the 19th century. PARTICIPANTS: Complete populations of these 3 countries. MEASUREMENTS: Continuous series of recorded deaths (from all causes) by month from the earliest available year (1877 for Switzerland, 1851 for Sweden, and 1908 for Spain) were jointly modeled with annual age group-specific death and total population counts using negative binomial and multinomial models, which accounted for temporal trends and seasonal variability of prepandemic years. The aim was to estimate the expected number of deaths in a pandemic year for a nonpandemic scenario and the difference in observed and expected deaths aggregated over the year. RESULTS: In 2020, the number of excess deaths recorded per 100 000 persons was 100 (95% credible interval [CrI], 60 to 135) for Switzerland, 75 (CrI, 40 to 105) for Sweden, and 155 (CrI, 110 to 195) for Spain. In 1918, excess mortality was 6 to 7 times higher. In all 3 countries, the peaks of monthly excess mortality in 2020 were greater than most monthly excess mortality since 1918, including many peaks due to seasonal influenza and heat waves during that period. LIMITATION: Historical vital statistics might be affected by minor completeness issues before the beginning of the 20th century. CONCLUSION: In 2020, the COVID-19 pandemic led to the second-largest infection-related mortality disaster in Switzerland, Sweden, and Spain since the beginning of the 20th century. PRIMARY FUNDING SOURCE: Foundation for Research in Science and the Humanities at the University of Zurich, Swiss National Science Foundation, and National Institute of Allergy and Infectious Diseases.

Mortality monitoring in Switzerland.

The Federal Statistical Office publishes weekly national and regional mortality reports online for Switzerland for the age groups 0 to <65 and 65+ years, which refer to deaths up to 9 days prior to the publication date. In addition to observed numbers of death events, expected numbers are reported, which allows detection of periods of excess mortality and its quantification. As with previous periods of excess mortality, in 2020 the monitoring detected and quantified excess mortality during the two waves of the SARS-CoV-2 epidemic in Switzerland. During the year, the epidemic resulted in well over 10% more deaths than expected, mainly in individuals aged 65 years and above. Because of the profound impact of the epidemic, interest in the weekly mortality publication and its underlying methodology increased sharply. From inquiries and from newspaper and tabloid publications on the matter it became abundantly evident that the principles of the mortality monitoring were not well understood in general; mortality monitoring was even regularly confused with cause of death statistics. The present article therefore aims at elucidating the methodology of national mortality monitoring in Switzerland and at putting it into its public health context.

Socioeconomic position and the COVID-19 care cascade from testing to mortality in Switzerland: a population-based analysis.

BACKGROUND: The inverse care law states that disadvantaged populations need more health care than advantaged populations but receive less. Gaps in COVID-19-related health care and infection control are not well understood. We aimed to examine inequalities in health in the care cascade from testing for SARS-CoV-2 to COVID-19-related hospitalisation, intensive care unit (ICU) admission, and death in Switzerland, a wealthy country strongly affected by the pandemic. METHODS: We analysed surveillance data reported to the Swiss Federal Office of Public Health from March 1, 2020, to April 16, 2021, and 2018 population data. We geocoded residential addresses of notifications to identify the Swiss neighbourhood index of socioeconomic position (Swiss-SEP). The index describes 1·27 million small neighbourhoods of approximately 50 households each on the basis of rent per m2, education and occupation of household heads, and crowding. We used negative binomial regression models to calculate incidence rate ratios (IRRs) with 95% credible intervals (CrIs) of the association between ten groups of the Swiss-SEP index defined by deciles (1=lowest, 10=highest) and outcomes. Models were adjusted for sex, age, canton, and wave of the epidemic (before or after June 8, 2020). We used three different denominators: the general population, the number of tests, and the number of positive tests. FINDINGS: Analyses were based on 4 129 636 tests, 609 782 positive tests, 26 143 hospitalisations, 2432 ICU admissions, 9383 deaths, and 8 221 406 residents. Comparing the highest with the lowest Swiss-SEP group and using the general population as the denominator, more tests were done among people living in neighbourhoods of highest SEP compared with lowest SEP (adjusted IRR 1·18 [95% CrI 1·02-1·36]). Among tested people, test positivity was lower (0·75 [0·69-0·81]) in neighbourhoods of highest SEP than of lowest SEP. Among people testing positive, the adjusted IRR was 0·68 (0·62-0·74) for hospitalisation, was 0·54 (0·43-0·70) for ICU admission, and 0·86 (0·76-0·99) for death. The associations between neighbourhood SEP and outcomes were stronger in younger age groups and we found heterogeneity between areas. INTERPRETATION: The inverse care law and socioeconomic inequalities were evident in Switzerland during the COVID-19 epidemic. People living in neighbourhoods of low SEP were less likely to be tested but more likely to test positive, be admitted to hospital, or die, compared with those in areas of high SEP. It is essential to continue to monitor testing for SARS-CoV-2, access and uptake of COVID-19 vaccination and outcomes of COVID-19. Governments and health-care systems should address this pandemic of inequality by taking measures to reduce health inequalities in response to the SARS-CoV-2 pandemic. FUNDING: Swiss Federal Office of Public Health, Swiss National Science Foundation, EU Horizon 2020, Branco Weiss Foundation.

Real-time monitoring shows substantial excess all-cause mortality during second wave of COVID-19 in Europe, October to December 2020.

The European monitoring of excess mortality for public health action (EuroMOMO) network monitors weekly excess all-cause mortality in 27 European countries or subnational areas. During the first wave of the coronavirus disease (COVID-19) pandemic in Europe in spring 2020, several countries experienced extraordinarily high levels of excess mortality. Europe is currently seeing another upsurge in COVID-19 cases, and EuroMOMO is again witnessing a substantial excess all-cause mortality attributable to COVID-19.

All-Cause Mortality and Causes of Death in the Swiss Hepatitis C Cohort Study (SCCS).

BACKGROUND: With direct-acting antiviral agents (DAAs), mortality rates and causes of death among persons with hepatitis C virus (HCV) infection may change over time. However, the emergence of such trends may be delayed by the slow progression of chronic hepatitis C. To date, detailed analyses of cause-specific mortality among HCV-infected persons over time remain limited. METHODS: We evaluated changes in causes of death among Swiss Hepatitis C Cohort Study (SCCS) participants from 2008 to 2016. We analyzed risk factors for all-cause and cause-specific mortality, accounting for changes in treatment, fibrosis stage, and use of injectable drugs over time. Mortality ascertainment was completed by linking lost-to-follow-up participants to the Swiss Federal Statistical Office death registry. RESULTS: We included 4700 SCCS participants, of whom 478 died between 2008 and 2016. The proportion of unknown causes of death decreased substantially after linkage, from 42% to 10%. Leading causes of death were liver failure (crude death rate 4.4/1000 person-years), liver cancer (3.4/1000 person-years), and nonliver cancer (2.8/1000 person-years), with an increasing proportion of cancer-related deaths over time. Cause-specific analysis showed that persons with sustained virologic response were less at risk for liver-related mortality than those never treated or treated unsuccessfully. CONCLUSIONS: Although the expected decrease in mortality is not yet observable, causes of death among HCV-infected persons have evolved over time. With the wider use of DAAs, liver-related mortality is expected to decline in the future. Continued monitoring of cause-specific mortality will remain important to assess the long-term effect of DAAs and design effective interventions.

Excess all-cause mortality during the COVID-19 pandemic in Europe - preliminary pooled estimates from the EuroMOMO network, March to April 2020.

A remarkable excess mortality has coincided with the COVID-19 pandemic in Europe. We present preliminary pooled estimates of all-cause mortality for 24 European countries/federal states participating in the European monitoring of excess mortality for public health action (EuroMOMO) network, for the period March-April 2020. Excess mortality particularly affected ≥ 65 year olds (91% of all excess deaths), but also 45-64 (8%) and 15-44 year olds (1%). No excess mortality was observed in 0-14 year olds.

Time trend of suicide in Swiss male farmers and comparison with other men: a cohort study.

OBJECTIVE: The ongoing agricultural reforms present serious challenges for Swiss farmers. Pressure is growing with difficult economic situations and the increasing demands for environmental protection, animal welfare and food safety. The aim of this study was to determine whether the strain is associated with higher risk of suicide in farmers than in men in other professions. We also wanted to analyse any changes in trends over time. METHODS: Using the Swiss National Cohort, a population-based longitudinal study (1991–2014), we investigated suicide rates for Swiss men aged 35 to 74 years who lived in small communities. We calculated crude rates of suicide and standardised mortality ratios (SMRs) for both calendar periods of four years, and overall. We estimated hazard ratios using Cox proportional hazard regression models of increasing complexity to examine associations with profession (farmer, non-farmer), calendar period, marital status, type of household, religion and language region. RESULTS: We identified 9006 suicides among 1,796,379 men in the total study population, of which 447 occurred in 89,303 farmers. Age-standardised rates of suicide per 100,000 person-years were higher (38.1, 95% CI 34.6–41.8) in farmers than in men with other professions (32.6, 95% CI 31.9–33.3). Although the age-standardised rates decreased for the whole study population until 2006, the declining trend continued afterwards only in non-farmers. The widening gap between farmers and non-farmers also showed in the SMR, which increased from 1.06 (95% CI 0.88–1.27) in the period 1991–1994 to 1.37 (95% CI 1.05–1.79) in 2011-2014. The Cox regression model analyses also revealed a higher risk of suicide for farmers, with hazard ratios ranging from 1.10 (95% CI 1.00–1.22) to 1.17 (95% CI 1.07–1.29). Usage of firearms was the most common method in the overall population (36.5%). In farmers, however, almost 60% committed suicide by hanging. CONCLUSION: The study shows a higher rate of suicide in farmers compared to non-farmers in Switzerland, with the gap widening increasingly after 2006. It underlines the importance of identifying the difficulties and concerns of male farmers at an early stage in order to make appropriate structural adjustments and to offer low-threshold assistance tailored to their needs and preferences.

Cause of death coding in Switzerland: evaluation based on a nationwide individual linkage of mortality and hospital in-patient records.

BACKGROUND: Cause of death statistics are an important tool for quality control of the health care system. Their reliability, however, is controversial. Comparing death certificates with their corresponding medical records is implemented only occasionally but may point to quality problems. We aimed at exploring the agreement between information in the cause of death statistics and hospital discharge diagnoses at death. METHODS: Selection of disease categories was based on ICD-10 Tabulation List for Morbidity and ICD-10 Mortality Tabulation List 2. Index cases were defined as deaths having occurred among Swiss residents 2010-2012 in a hospital and successfully linked to the Swiss National Cohort. Rare, external and ill-defined causes were excluded from comparison, leaving 53,605 deaths from vital statistics and 47,311 deaths from hospital discharge statistics. For 95% of individuals, respective information from the 2000 census could be retrieved and used for multiple logistic regression. RESULTS: For 83% of individuals the underlying cause of death could be traced among hospital diagnoses and for 77% the principal hospital diagnosis among the cause of death information. Mirroring different evaluation of complex situations by individual physicians, rates of agreement varied widely depending on disease/cause of death, but were generally in line with similar studies. Multiple logistic regression revealed however significant variation in reporting that could not entirely be explained by age or cause of death of the deceased suggesting differential exploitation of available diagnosis information. CONCLUSION: Substantial regional variation and lower agreement rates among socially disadvantaged groups like single, less educated, or culturally less integrated persons suggest potential for improving reporting of diagnoses and causes of death by physicians in Switzerland. Studies of this kind should be regularly conducted as a quality monitoring.

Increase in assisted suicide in Switzerland: did the socioeconomic predictors change? Results from the Swiss National Cohort.

OBJECTIVE: To determine whether the strong increase in assisted suicides in Switzerland since 2008 is linked to a shift in the socioeconomic factors associated with assisted suicide and its related diagnoses. METHODS: In a population-based longitudinal study, we investigated assisted suicides in Switzerland over the period 2003-2014. Two groups of younger (25-64 years) and older (65-94 years) persons were analysed separately and compared. We calculated crude rates and used Cox proportional hazard and logistic regression models to examine associations of assisted dying with gender, marital status, education, religion, neighbourhood socioeconomic status and other variables, and investigated trends over time. RESULTS: We identified 3941 assisted suicides among 6 237 997 Swiss residents, 80% of which occurred in the older age group. Crude rates of assisted suicide more than tripled during the study period from 3.60 to 11.21 per 100 000 person-years; the increase was more pronounced in the older age group. Cancer was the most common underlying diagnosis (41.8%), but the percentage dying assisted was highest among patients with diseases of the nervous system (5.25% in the younger and 1.23% in the older age group). The factors associated with assisted suicide did not change during the study period. Female gender, higher education, having no religious affiliation, no children and a Swiss passport, living in a neighbourhood with a higher socioeconomic index and living in the French-speaking part of Switzerland were associated with a higher rate. CONCLUSIONS: The study results do not indicate any shift in socioeconomic factors associated with assisted suicide, but a more pronounced increase in incidence among the elderly.

Excess all-cause and influenza-attributable mortality in Europe, December 2016 to February 2017.

Since December 2016, excess all-cause mortality was observed in many European countries, especially among people aged ≥ 65 years. We estimated all-cause and influenza-attributable mortality in 19 European countries/regions. Excess mortality was primarily explained by circulation of influenza virus A(H3N2). Cold weather snaps contributed in some countries. The pattern was similar to the last major influenza A(H3N2) season in 2014/15 in Europe, although starting earlier in line with the early influenza season start.

Suicide assisted by right-to-die associations: a population based cohort study.

BACKGROUND: In Switzerland, assisted suicide is legal but there is concern that vulnerable or disadvantaged groups are more likely to die in this way than other people. We examined socio-economic factors associated with assisted suicide. METHODS: We linked the suicides assisted by right-to-die associations during 2003-08 to a census-based longitudinal study of the Swiss population. We used Cox and logistic regression models to examine associations with gender, age, marital status, education, religion, type of household, urbanization, neighbourhood socio-economic position and other variables. Separate analyses were done for younger (25 to 64 years) and older (65 to 94 years) people. RESULTS: Analyses were based on 5 004 403 Swiss residents and 1301 assisted suicides (439 in the younger and 862 in the older group). In 1093 (84.0%) assisted suicides, an underlying cause was recorded; cancer was the most common cause (508, 46.5%). In both age groups, assisted suicide was more likely in women than in men, those living alone compared with those living with others and in those with no religious affiliation compared with Protestants or Catholics. The rate was also higher in more educated people, in urban compared with rural areas and in neighbourhoods of higher socio-economic position. In older people, assisted suicide was more likely in the divorced compared with the married; in younger people, having children was associated with a lower rate. CONCLUSIONS: Assisted suicide in Switzerland was associated with female gender and situations that may indicate greater vulnerability such as living alone or being divorced, but also with higher education and higher socio-economic position.

Premature deaths in Switzerland from 1995-2006: causes and trends.

PURPOSE: Mortality expressed as potential years of life lost (PYLL) underscores premature and preventable mortality. We analysed causes of and trends in premature death in Switzerland to highlight the areas which provide the greatest potential outcome for preventive measures. METHODS: Premature mortality rates and trends from 1995-2006 were examined by reviewing potential years of life lost between age 1 and 70, as the upper age limit, considering 4 main categories: circulatory diseases, cancer, external causes of mortality and other causes, and 19 specific causes of death. Trends were assessed using join point analysis with PYLL expressed as age-standardised rate. The analysis was based on the official death certification files provided by the Swiss Federal Statistical Office. RESULTS: Age adjusted PYLL rates decreased for all categories of causes, but the decline in cancers was modest compared to circulatory diseases and external causes. The strongest downward trends were observed for AIDS, traffic accidents and ischaemic heart disease. In women breast cancer contributed most to the decline of premature mortality but remains the first cause of early death. Lung cancer in women is the only cause of premature mortality with rising trends. CONCLUSIONS: Past efforts in prevention, early detection and treatment, but also a healthier lifestyle and other factors, have very probably contributed to the considerable reduction in the rate of potential years of life lost, but the rising rate of premature mortality caused by lung cancer in women is of concern. Persistent efforts in prevention and early detection are required to further reduce premature death and its burden on society.

Mortality from primary liver cancer in Switzerland from 1975 to 1994.

BACKGROUND/AIMS: The aim of the present study was to analyze the mortality from primary liver cancer in Switzerland over a 20 year period and compare our results with the mortality data from Germany, France, Italy and Austria. METHODS: Absolute and age-standardized mortality rates for primary liver cancer from 1975 to 1994 were obtained from the Swiss Federal Office of Statistics. The corresponding figures (1980-1994) for Germany, France, Italy and Austria were extracted from the World Health Organization mortality database. RESULTS: The average age standardized mortality rate from primary liver cancer in Swiss men increased by 33% over the last twenty years from 3.9 to 5.2/100,000 people, whereas it remained unchanged on a much lower level in women (around 1.1/100,000). A similar increase was observed in men from France (91%), Italy (44%) and Germany (52%), whereas in Austria (5%) the increase was much less pronounced. CONCLUSION: The rising mortality from primary liver cancer in Switzerland is restricted to Swiss men. The changes in Switzerland are very similar to those in France, Italy and Germany. The reason for this increase remains unknown, but could be related to an increase in HCV-related primary liver cancer. Population based studies analyzing the aetiology of the underlying liver disease associated with HCCs detected are required to address this issue.

Quality of reporting of randomized trials as a measure of methodologic quality.

CONTEXT: The evaluation of the methodologic quality of randomized controlled trials (RCTs) is central to evidence-based health care. Important methodologic detail may, however, be omitted from published reports, and the quality of reporting is therefore often used as a proxy measure for methodologic quality. We examined the relationship between reporting quality and methodologic quality of published RCTs. METHODS: Study of 60 reports of placebo-controlled trials published in English-language journals from 1985 to 1997. Reporting quality was measured using a 25-item scale based on the 1996 issue of the Consolidated Standards of Reporting Trials (CONSORT). Concealment of allocation, appropriate blinding, and analysis according to the intention-to-treat principle were indicators of methodologic quality. Methodologic quality was compared between groups of trials defined by reporting quality scores of low, intermediate, and high. Reporting quality scores were compared between groups defined by high and low methodologic quality. RESULTS: Among 23 trials of low reporting quality (median score, 9 [range, 3.5-10.5]), allocation concealment was unclear for all but 1 trial, but there were 16 trials (70%) with adequate blinding and 9 trials (39%) that had been analyzed according to the intention-to-treat principle. Among 18 trials of high reporting quality (median score, 18 [range 16.5-22.0]), there were 8 trials (44%) with adequate allocation concealment, 16 trials (89%) with adequate blinding, and 13 trials (72%) analyzed according to the intention-to-treat principle. The median reporting score was 15.0 for the 33 trials that were analyzed according to intention-to-treat principle and 14.5 for the 14 trials with on-treatment analyses (P =.67). CONCLUSIONS: Similar quality of reporting may hide important differences in methodologic quality, and well-conducted trials may be reported badly. A clear distinction should be made between these 2 dimensions of the quality of RCTs.