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Table 2 Definition of Variables

From: Feasibility and validity of International Classification of Diseases based case mix indices

CMI variables

Severity of illness index

Abbreviation

Definition

DRG costliness CMI

DRGCMI

CMI based on payments for DRGs

ICD principal diagnosis costliness CMI

ICDCMI-DC

CMI based on payment under ICD principal diagnosis groupings

ICD principal diagnosis LOS CMI

ICDCMI-DL

CMI based on LOS under ICD principal diagnosis groupings

ICD procedure costliness CMI

ICDCMI-PC

CMI based on payment under ICD procedure code groupings.

ICD procedure LOS CMI

ICDCMI-PL

CMI based on LOS under ICD procedure code groupings

Hospital variables

  

Accreditation status

ACC

Medical center (ACC = 1)

  

Regional hospital (ACC = 2)

  

Local hospital (ACC = 3)

  

Non-accredited (ACC = 4)

Ownership

OWNER

Public (OWNER = 1)

  

Non-profit (OWNER = 2)

  

Private (OWNER = 3)

Teaching status

EDU

Teaching (EDU = 1)

  

Non-teaching (EDU = 0)