Segmented Linear Regression Models for Assessing Change in Retrospective Studies in Healthcare

Table 2

Patient demographics before and after implementation of the HFU.

Factor	Pre-HFU ()	Post-HFU ()	value
Age	84	85	0.0635
Gender	F:1575 M:601	F:477 M:194	0.5463
Pathological fracture	59	6	0.0091
ASA grade (1, 2, 3, 4, 5)	91, 574, 1178, 302, 3	12, 201, 378, 76, 1	0.0094
Reoperation	31	15	0.2035

Significant values are in bold.