Article Figures & Data
Figures
- Figure
Bland-Altman plot demonstrating predictive performance for hospital length of stay.
Tables
- Table 1
National Surgical Quality Improvement Program (NSQIP) calculator factors for patients in the adult spinal deformity (ASD) cohort.
NSQIP Factor % Cohort
(N = 9143)Age, years, mean 58.94 Females 56% Functional status Independent 94.9% Partially dependent 4.4% Totally dependent 0.7% Emergency cases 1.6% Wound class Clean 94.7% Clean/contaminated 0.8% Contaminated 0.5% Dirty/infected 1.4% ASA class I 2.7% II 40.7% III 52.0% IV 4.6% V 0% None assigned 0% Steroid use for chronic condition 5.1% Ascites within 30 d before surgery <0.1% Systemic sepsis within 48 h of surgery 1.7% Ventilator dependent 0.4% Disseminated cancer 3.2% Diabetes 15.6% Use of hypertensive medications 52.8% CHF within 30 d before surgery 0.3% Dyspnea 3.0% History of smoking within 1 y 21.4% Severe COPD 4.3% Dialysis 0.7% Acute renal failure 0.1% ASA, American Society of Anesthesiologists; ASD, adult spinal deformity; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; NSQIP, National Surgical Quality Improvement Program.
- Table 2
Predicted percentages from the NSQIP calculator and observed percentages from the actual cohort of perioperative outcomes, as well as the Brier score and Brier max between the predicted and observed percentages.
Complication Predicted, % Observed, % Brier Score Brier Max Serious complication 10.48 10.1 0.00001444 0.090799 Any complication 11.54 11.4 0.00000196 0.101004 Pneumonia 1.22 2.4 0.00013924 0.023424 Cardiac complication 0.34 0.9 0.00003136 0.008919 SSI 2.04 1.8 5.76E-06 0.017676 UTI 1.69 2.7 0.00010201 0.026271 VTE 1.55 2.3 0.00005625 0.022471 Renal failure 0.23 0.2 9E-08 0.001996 Readmission 5.69 6.6 8.281E-05 0.061644 Return to OR 3.9 03.8 0.000001 0.036556 Death 0.28 0.9 0.00003844 0.008919 Discharge to nursing or rehabilitation 20.55 2.64 0.00342225 0.194304 Sepsis 1.28 1.8 0.00002704 0.017676 NSQIP, National Surgical Quality Improvement Program; OR, operating room; SSI, surgical site infection; UTI, urinary tract infection; VTE, venous thromboembolism.
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