IF	Intertrochanteric fractures
eLOS	Extended length of hospital stay
IMN	Intramedullary fixation
PFNA	Proximal femoral nail antirotation
BMI	Body mass index
mECM	Modified Elixhauser comorbidity method
NRS	Numerical rating scores
GDS	Geriatric Depression Scale
FIM	Functional independence measure
OR	Odds ratio
CI	Confidence interval