Article Figures & Data
Figures
- Fig. 1
Patient inclusion/exclusion criteria. Following identification of the final cohort, discharge weights were applied, which roughly correspond to a 5-fold multiplication (given that the NIS is a 20% sample database).
- Fig. 2
Bar graphs showing rates of overall complications (Top) and major complications (Bottom) stratified by month of admission. These rates were not statistically different between groups.
Tables
- Table 1
Characteristics of patients who underwent adult spinal deformity surgery in July and other months between 2002 and 2011.
Variable July Other months p-value Total 2,023 25,771 Age (average years) 56 ± 16 58 ± 15 0.040 Age > 65 (%) 30.4 35.0 0.057 Female gender (%) 76.3 74.7 0.468 Race Caucasian (%) 91.4 91.3 0.933 African American (%) 3.8 3.5 Hispanic (%) 1.7 2.2 Other (%) 3.1 3.0 Primary payer Medicare (%) 38.5 41.7 0.183 Medicaid (%) 7.2 4.5 Private insurance (%) 50.2 50.1 Other (%) 4.1 3.7 Elixhauser comorbidity score (average) 1.8 ± 1.7 1.8 ± 1.6 0.644 Fusion of 8 or more segments (%) 25.4 20.9 0.031 Osteotomy (%) 6.7 7.1 0.768 Revision procedures (%) 5.0 4.9 0.933 - Table 2
Outcomes of patients who underwent adult spinal deformity surgery in July and other months between 2002 and 2011.
Variable July Other months p-value Total 2,023 25,771 Length of stay (average days) 7.2 ± 5.4 7.3 ± 7.1 0.641 Overall complications (%) 43.1 44.9 0.468 Major complications (%) 12.9 12.4 0.764 Mortality (%) * 0.4 0.807 ↵* NIS does not allow publication of values equal to or less than 10.
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