Table 4.

Clinical usefulness of risk groups based on cumulative scores and proportions in the dataset

Prediction model	Cumulative score	Predicted 30-day mortality rate (%)	Proportion N (%)
NHFS risk group
Low	≤ 3	≤ 2.7	121 (35.2)
Intermediate	4–5	4.4–6.9	149 (43.3)
High	≥ 6	≥ 10.7	74 (21.5)
Holt et al. risk group
Low	< 1	< 2.2	111 (32.3)
Intermediate	1–2	2.2–5.8	140 (40.7)
High	> 2	> 5.8	93 (27.0)
HEMA risk group
Low	≤ 1	≤ 5.6	251 (73.0)
Intermediate	1.5–2	8.9–13.9	54 (15.7)
High	≥ 2.5	> 21.0	39 (11.3)

NHFS Nottingham Hip Fracture Score, HEMA Hip fracture Estimator of Mortality Amsterdam