Table 3.

Absolute risk reduction in 30-day postoperative mortality rate in hip fracture patients, stratified by OFS

	Adjusted Absolute Risk Reduction (pp)	p value
OFS 0	2.2 (2.0–2.4)	< 0.001
OFS 1	6.0 (5.7–6.3)	< 0.001
OFS 2	10.1 (9.6–10.5)	< 0.001
OFS 3	10.7 (10.1–11.4)	< 0.001
OFS 4	15.6 (14.1–17.2)	< 0.001
OFS 5	24.1 (18.3–30.0)	< 0.001

The absolute risk reduction is defined as the absolute difference in mortality rate (%) between patients with and without beta-blocker therapy, after balancing the cohorts using inverse probability of treatment weighting. In each stratum cohorts were balanced based on age, sex, ASA classification, type of fracture, type of surgery, previous myocardial infarction, peripheral vascular disease, cerebrovascular disease, diabetes mellitus, dementia, chronic obstructive pulmonary disease, connective tissue disease, liver disease, and chronic kidney disease

OFS Orthopedic Hip Frailty Score, ASA American Society of Anesthesiologists