Objective To explore the potential impact of the first wave of COVID-19 pandemic on all cause and cause-specific mortality in Norway. Design Population based register study. Setting The Norwegian cause of Death Registry and the National Population Register of Norway. Participants All recorded deaths in Norway during March to May from 2010 to 2020. Main outcome measures Rate (per 100 000) of all-cause mortality and causes of death in the EU Shortlist for Causes of Death March to May 2020. The rates were age-standardised and adjusted to a 100% register coverage and compared with a 95% prediction interval (PI) based on corresponding rates for 2010-2019. Results 113 710 deaths were included, of which 10 226 from 2020. We did not observe any deviation from predicted total mortality. There were fewer than predicted deaths from chronic lower respiratory diseases excluding asthma (11.4, 95% PI 11.8 to 15.2) and from other non-ischemic, non-rheumatic heart diseases (13.9, 95% PI 14.5 to 20.2). The death rates were higher than predicted for Alzheimer's disease (7.3, 95% PI 5.5 to 7.3) and diabetes mellitus (4.1, 95% PI 2.1 to 3.4). Conclusions There was no significant difference in the frequency of the major causes of death in the first wave of the 2020 COVID-19 pandemic in Norway. An increase in diabetes mellitus deaths and reduced mortality due to some heart and lung conditions may be linked to infection control measures.
Background There is a concern that the COVID-19 pandemic will lead to an increase in suicides. Several reports from the first months of the pandemic showed no increase in suicide rates while studies with longer observation times report contrasting results. In this study, we explore the suicide rates in Norway during the first year of the pandemic for the total population as well as for relevant subgroups such as sex, age, geographical areas, and pandemic phases. Methods This is a cohort study covering the entire Norwegian population between 2010 and 2020. The main outcome was age-standardized suicide rates (per 100,000 inhabitants) in 2020 according to the Norwegian Cause of Death Registry. This was compared with 95% prediction intervals (95% PI) based on the suicide rates between 2010 and 2019. Results In 2020, there were 639 suicides in Norway corresponding to a rate of 12.1 per 100,000 (95% PI 10.2–14.4). There were no significant deviations from the predicted values for suicides in 2020 when analyzing age, sex, pandemic phase, or geographical area separately. We observed a trend toward a lower than predicted suicide rate among females (6.5, 95% PI 6.0–9.2), and during the two COVID-19 outbreak phases in 2020 (2.8, 95% PI 2.3–4.3 and 2.8, 95% CI 2.3–4.3). Conclusion There is no indication that the COVID-19 pandemic led to an increase in suicide rates in Norway in 2020.
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