COVID-19 is associated with increased care needs and a decreased likelihood of returning home following a hip fracture: The IMPACT frailty study

The primary aim was to evaluate the impact of COVID-19 on frailty in patients surviving a hip fracture. Secondary aims were to assess impact of COVID-19 on (i) length of stay (LoS) and post-discharge care needs, (ii) readmissions, and (iii) likelihood of returning to own home. This propensity score-matched case-control study was conducted in a single centre between 01/03/20-30/11/21. A 'COVID-positive' group of 68 patients was matched to 141 'COVID-negative' patients. 'Index' and 'current' Clinical Frailty Scale (CFS) scores were assigned for frailty at admission and at follow-up. Data were extracted from validated records and included: demographics, injury factors, COVID-19 status, delirium status, discharge destination, and readmissions. For subgroup analysis controlling for vaccination availability, the periods 1 March 2020-30 November 2020 and 1 February 2021-30 November 2021 were considered pre-/post-vaccine periods. Median age was 83.0 years, 155/209 (74.2%) were female and median follow-up was 479 days (interquartile range [IQR] 311). There was an equivalent median increase in CFS in both groups (+1.00 [IQR 1.00-2.00, p = 0.472]). However, adjusted analysis demonstrated COVID-19 was independently associated with a greater magnitude change (Beta coefficient [β] 0.27, 95% confidence interval [95% CI] 0.00-0.54, p = 0.05). COVID-19 in the post-vaccine availability period was associated with a smaller increase versus pre-vaccine (β -0.64, 95% CI -1.20 to -0.09, p = 0.023). COVID-19 was independently associated with increased acute LoS (β 4.40, 95% CI 0.22-8.58, p = 0.039), total LoS (β 32.87, 95% CI 21.42-44.33, p