Table 4.

Studies addressing association between gender and frailty on spine pathologies.

Frailty Index	Spine Disease	Outcome	Conclusions	Ref
ASD-FI	ASD	Female = (88.1%) NF; (79.4%) F; (68.2%) SF p = 0.028: NF Vs F and SF; F Vs SF	Frailty severity decreased with female sex	33
mCD-FI	CD	Female = (48.3%) NF; (71.4%) F; (71.4%) SF p = 0.034: F and SF Vs NF	Frailty severity increased with female sex	44
mFI	DSD	Male = (50.8%) NF; (53%) PF; (60.1%) F p < 0.0005: F Vs NF and PF. Male sex: ↑ major complications, LOS, discharge disposition than female sex p < 0.0005 Male Vs female	Frailty severity increased with male sex	41