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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