Table 7.

Additional risk on mortality with every increasing CCI score (%) per orthopaedic subspecialty

Orthopaedic subspecialty	Additional risk	95% CI		p value
		Lower	Upper
Arthroplasty	0.01	−0.00031	0.0005	0.667
Foot and ankle	−0.01	−0.001	0.0011	0.836
Hand and upper extremity	−0.02	−0.00095	0.0006	0.706
Shoulder	0.25	0.0013	0.0036	< 0.001
Spine	0.00	−0.001	0.001	0.953
Sports	−0.01	−0.001	0.0009	0.896
Pediatrics	0.05	−0.005	0.0055	0.847
Trauma	0.24	0.0016	0.0033	< 0.001
Oncology	0.33	0.0024	0.0042	< 0.001
R-square	0.099

N = 30,129; CCI = Charlson Comorbidity Index.