TY - JOUR
T1 - A validated preoperative score for predicting 30-day readmission after 1–2 level elective posterior lumbar fusion
AU - Jain, Deeptee
AU - Singh, Paramjit
AU - Kardile, Mayur
AU - Berven, Sigurd H.
PY - 2019/7/1
Y1 - 2019/7/1
N2 - Purpose: To develop a model to predict 30-day readmission rates in elective 1–2 level posterior lumbar spine fusion (PSF) patients. Methods: In this retrospective case control study, patients were identified in the State Inpatient Database using ICD-9 codes. Data were queried for 30-day readmission, as well as demographic and surgical data. Patients were randomly assigned to either the derivation or the validation cohort. Stepwise multivariate analysis was conducted on the derivation cohort to predict 30-day readmission. Readmission after posterior spinal fusion (RAPSF) score was created by including variables with odds ratio (OR) > 1.1 and p < 0.01; value assigned to each variable was based on the OR and calibrated to 100. Linear regression was performed between readmission rate and RAPSF score to test correlation in both cohorts. Results: There were 92,262 and 90,257 patients in the derivation and validation cohorts. Thirty-day readmission rates were 10.9% and 11.1%, respectively. Variables in RAPSF included: age, female gender, race, insurance, anterior approach, cerebrovascular disease, chronic pulmonary disease, congestive heart failure, diabetes, hemiplegia/paraplegia, rheumatic disease, drug abuse, electrolyte disorder, osteoporosis, depression, obesity, and morbid obesity. Linear regression between readmission rate and RAPSF fits the derivation cohort and validation cohort with an adjusted r2 of 0.92 and 0.94, respectively, and a coefficient of 0.011 (p < 0.001) in both cohorts. Conclusion: The RAPSF can accurately predict readmission rates in PSF patients and may be used to guide an evidence-based approach to preoperative optimization and risk adjustment within alternative payment models for elective spine surgery. Level of evidence: 3. Graphical abstract: These slides can be retrieved under Electronic Supplementary Material.[Figure not available: see fulltext.].
AB - Purpose: To develop a model to predict 30-day readmission rates in elective 1–2 level posterior lumbar spine fusion (PSF) patients. Methods: In this retrospective case control study, patients were identified in the State Inpatient Database using ICD-9 codes. Data were queried for 30-day readmission, as well as demographic and surgical data. Patients were randomly assigned to either the derivation or the validation cohort. Stepwise multivariate analysis was conducted on the derivation cohort to predict 30-day readmission. Readmission after posterior spinal fusion (RAPSF) score was created by including variables with odds ratio (OR) > 1.1 and p < 0.01; value assigned to each variable was based on the OR and calibrated to 100. Linear regression was performed between readmission rate and RAPSF score to test correlation in both cohorts. Results: There were 92,262 and 90,257 patients in the derivation and validation cohorts. Thirty-day readmission rates were 10.9% and 11.1%, respectively. Variables in RAPSF included: age, female gender, race, insurance, anterior approach, cerebrovascular disease, chronic pulmonary disease, congestive heart failure, diabetes, hemiplegia/paraplegia, rheumatic disease, drug abuse, electrolyte disorder, osteoporosis, depression, obesity, and morbid obesity. Linear regression between readmission rate and RAPSF fits the derivation cohort and validation cohort with an adjusted r2 of 0.92 and 0.94, respectively, and a coefficient of 0.011 (p < 0.001) in both cohorts. Conclusion: The RAPSF can accurately predict readmission rates in PSF patients and may be used to guide an evidence-based approach to preoperative optimization and risk adjustment within alternative payment models for elective spine surgery. Level of evidence: 3. Graphical abstract: These slides can be retrieved under Electronic Supplementary Material.[Figure not available: see fulltext.].
KW - Bundled payment
KW - Lumbar spine fusion
KW - Multivariate regression
KW - Obesity
KW - Posterior spine surgery
KW - Predictive analytics
KW - Predictive modeling
KW - Readmission
KW - Single-level fusion
KW - Socioeconomic factors
UR - http://www.scopus.com/inward/record.url?scp=85062709206&partnerID=8YFLogxK
U2 - 10.1007/s00586-019-05937-y
DO - 10.1007/s00586-019-05937-y
M3 - Article
C2 - 30852687
AN - SCOPUS:85062709206
SN - 0940-6719
VL - 28
SP - 1690
EP - 1696
JO - European Spine Journal
JF - European Spine Journal
IS - 7
ER -