15.2 Showing Extra Payoffs
You can create additional payoff sets in TreeAge to capture additional model outcomes. The Healthcare Example model HC-Tree-UpstreamPayoffsAll.trex captures four different outcomes.
The four enabled payoffs are:
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Cost (active payoff for cost-effectiveness calc method)
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Eff (active payoff for cost-effectiveness calc method)
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Initial Tx Cost
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Followup Tx Cost
The first two active payoffs (Cost and Eff) are used for Cost-Effectiveness Analysis, while the others are additional model outcomes. You can have as many additional model outcomes as you require.
Model configuration to set up and display extra payoffs:
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Open Tree Preferences.
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Navigate to Calculation > Calculation Method.
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Review the calculation method is Cost-effectiveness and the Active Payoffs are 1 (Cost) and 2 (Effectiveness).
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Navigate to Calculation > Payoffs.
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There are 4 enabled payoffs, creating 2 additional payoffs in addition to the 2 active payoffs.
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The “Calculate extra payoffs” box is checked so all payoffs will be calculated during analysis.
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Navigate to Calculation > Payoffs > Custom Names.
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Appropriate names are entered for each payoff set.
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Navigate to Display > Payoffs.
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The “Show extra payoffs” box is checked to display the additional payoffs in the model display.
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The “Show active payoffs below terminal nodes” box is checked to show upstream and terminal node payoffs in the same way.
For each event in the model where there is an additional payoff to be captured, use the same process as for capturing upstream payoffs, as per instructions below.
To enter upstream payoffs:
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Select the node at which the value should be accumulated.
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Open the Payoffs View (from the Views menu).
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Enter the value accumulated at that node.
When we roll back the tree, expected values for the two active and two additional payoffs are calculated and displayed beneath each node in the model.
Note that the payoff labels include "EV" to distinguish this from the entries that are displayed when roll back is off.
