This analysis may require further research to determine whether other treatment-resistant depression or severe depression definitions are specifically associated with inflammatory joint disease.
Objective To investigate the effectiveness of primary covid-19 vaccination (first two doses and first booster dose within the recommended schedule) against post-covid-19 condition (PCC).
Design Population based cohort study.
Setting Swedish Covid-19 Investigation for Future Insights a Population Epidemiology Approach using Register Linkage (SCIFI-PEARL) project, a register based cohort study in Sweden.
Participants All adults (≥18 years) with covid-19 first registered between 27 December 2020 and 9 February 2022 (n=589 722) in the two largest regions of Sweden. Individuals were followed from a first infection until death, emigration, vaccination, reinfection, a PCC diagnosis (ICD-10 diagnosis code U09.9), or end of follow-up (30 November 2022), whichever came first. Individuals who had received at least one dose of a covid-19 vaccine before infection were considered vaccinated.
Main outcome measure The primary outcome was a clinical diagnosis of PCC. Vaccine effectiveness again
In a population-based, sibling-controlled cohort study Jiangwei Sun and colleagues explore the long-term risk of arrhythmias in patients with inflammatory bowel disease.
Background Frailty is an age-related health condition affecting an estimated 18% of older adults in Europe and past evidence has shown a relationship between socioeconomic factors and frailty. We examined population frailty trends and the association between frailty and 5-year mortality by education tertiles and income quartiles at ages 75, 85 and 95 in Swedish registry data.
Methods All Swedish residents born in 1895–1945 and in the Total Population Register from 1990 to 2020 were included. Frailty was assessed with the Hospital Frailty Risk Score (HFRS), which sums 109 weighted International Classification of Diseases (ICD codes), collected from the National Patient Register.
Results Regardless of education and income, frailty increased over time, though the association between frailty and 5-year mortality remained stable. Particularly in earlier birth cohorts, although the highest education and income levels had the highest mean HFRS scores, the lowest education and income level
Jiangwei Sun and colleagues investigate the long-term risk of inflammatory bowel disease after endoscopic biopsy with normal mucosa in a Swedish cohort.