Incidence, Quality of Care, and Mortality in Hip Fracture Patients in the Course of the COVID Pandemic: A Population-Based Cohort Study.

Background We assessed the incidence, quality of in-hospital care, and mortality for hip fracture (HF) patients in Denmark before and during the coronavirus disease (COVID) pandemic.Methods We obtained data from the Danish registries in the COVID period (March 11, 2020 to January 27, 2021, overall and in 5 periods) and compared it to a pre-COVID period (March 13, 2019 to March 10, 2020). We calculated the proportion of patients (%) that have fulfilled all the relevant quality indicators (a composite score of 100%) and adjusted hazard ratios (HR) with a 95% confidence interval (CI) for 30-day mortality.Results The incidence of HF was 5.7 per 1 000 person-years both in pre-COVID and COVID periods. About 35% of patients had a composite score of 100% in the COVID period compared to 28% in the pre-COVID period (proportion ratio 1.23 [95% CI: 1.17-1.30]). Fulfillment of all individual quality indicators was similar or higher in the COVID period. 30-day mortality was 9.5% in pre-COVID period, compared to 10.8% in the COVID period (HR 1.15 [95% CI: 1.02-1.30]). HRs varied from 1.07 (95% CI: 0.89-1.29) to 1.31 (95% CI: 1.06-1.62) in 5 COVID periods. In-hospital mortality was 4% in pre-COVID versus 4.4% in COVID period.Conclusions The incidence of HF in Denmark remained unchanged. The quality of in-hospital care was higher in the COVID compared to pre-COVID period. Unfortunately, 30-day mortality was also higher, highlighting the importance of recognizing diversity of social networks, home support, and digital health intervention after discharge for outcome of HF patients.