The impact of first wave of COVID-19 on the nursing-sensitive and rehabilitation outcomes of patients undergoing hip fracture surgery: a single centre retrospective cohort study

Table 3 Effect of year of admission on risk of PU based on log-binomial model. Based on 351 patients with complete information for the calculation of propensity score ^a

	Risk Ratio	95% CI	p-value
Crude effect
2020 vs 2019	2.07	1.13–3.81	0.019
Change-in-estimate adjustment
2020 vs 2019	1.64	0.88–3.07	0.121
Length of stay, per 1-day increase	1.07	1.03–1.10	< 0.001
Age, per 1-year increase	1.02	0.99–1.05	0.154
Adjusted for Propensity score^a
2020 vs 2019	1.63	0.87–3.05	0.127

^a Age, gender, Braden Index score, days with a urinary catheters, fracture site and length of stay

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