Graham notation - Operating classification scheme

8 important questions on Graham notation - Operating classification scheme

What do alpha/beta/gamma/teta mean?

Alpha: patient characteristics
Beta: delineation of the decision 
gamma: uncertainty incorporation
teta: performance measures

What does alpha exist of?

Alpha1 patient class elective or non-elective

What does beta exist of?

Beta1: subject of the descision
Beta2: type of descision
Beta3: degree of integration
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In beta1 what can be the subjects?

  • Medical discipline
  • surgeons
  • patients
  • other subjects

In beta2 what can be the subjects?

  • Assignment of date
  • time indication
  • operating room
  • capacity
  • other decisions

In beta3 what can be the subjects?

  • Isolated
  • integrated
    • PACU: postanesthesia care
    • ICU intensive care
    • wards
    • other

What does gamma consist of?

Single parameter indicating the extent of stochasticity

What does teta exist of?

Gamma1: objective scope (single or multiple criteria)
Gamma2: performance measures

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