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Table 4 Input variables included in economic evaluation model

From: Cost effectiveness of outpatient lumbar discectomy

Input variable Mean ± SD Type of distribution Information source
Costs–Euro– ± 2.5 days admission    Primary (our sample)
Surgical costs in ambulatory setting 630.1 ± 18.4 Gamma
Surgical costs in hospitalization setting 883.7 ± 26.9 Gamma
Hotel costs in hospitalization setting 593.5 ± 211.1 Gamma
Costs–Euro–1 day admission    Primary (our sample)
Surgical costs in ambulatory setting 630.1 ± 18.4 Gamma
Surgical costs in hospitalization setting 883.7 ± 26.9 Gamma
Hotel costs in hospitalization setting 244.5 ± 1.9 Gamma
QALYs in ambulatory setting    Primary (our sample)
Based on 3 months ODI data [AUC method] 0.144 ± 0.022 Gamma
Based on 3 months ODI data [CfB method] 0.017 ± 0.010 Gamma
Based on 6 months ODI data [AUC method] 0.315 ± 0.040 Gamma
Based on 6 months ODI data [CfB method] 0.061 ± 0.026 Gamma
QALYs in hospitalization setting    Meta-analysis
Based on 3 months ODI data [AUC method] 0.146 ± 0.018 Gamma
Based on 3 months ODI data [CfB method] 0.023 ± 0.007 Gamma
Based on 6 months ODI data [AUC method] 0.293 ± 0.067 Gamma
Based on 6 months ODI data [CfB method] 0.055 ± 0.021 Gamma
  1. OR costs are costs related with the procedure. Hotel costs are costs related with hospital stay. SD, standard deviations. OR, operatory Room; AUC, Area under the curve; CfB, Change from Baseline; ODI, Oswestry Disability Index; QALY, Quality-adjusted life year
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