Values is the sixth stop on the hēRo3 Subway. The Values page is used to define how outcomes and costs should be calculated in your model. By definition, all values in a model are either health values or economic values. Health values represent line items for health outcomes in a model. For example, in a model in which patients can spend time in several different health states, life years for an individual health state is a health value. Economic values similarly represent line items for costs in a model. Health and economic values may be defined in a single row, with only one formula, if appropriate, or across multiple rows and using multiple formulas. If multiple rows are needed to encapsulate a particular value, each row must have the same value name (eg, PFS_costs), and each row then defines how a value should be calculated for a particular strategy, health state, and/or state transition.
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Column |
Description |
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Name |
Name of the health or economic value. Names must start with a letter and may only contain letters, numbers, and underscores. Names must be limited to no more than 20 characters. |
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Description |
Description of the value. Descriptions have no restrictions on the types of characters and are limited to no more than 30 characters. |
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Category |
Category in which a value belongs (health, economic). |
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Strategy |
Strategy for which a particular value is accrued. |
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Type |
How a particular value is accrued. To accrue a particular value per cycle or in state residency, select 'Residence'. To accrue a particular value on a transition from one state to another, select 'Transition' (for example, a terminal care cost may be applied on the transition from any alive state to the dead state). To apply a particular value (undiscounted) at the start of the model, select 'Model Start'. |
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State |
Health state in which a particular value is accrued. To accrue a particular value in all health states (including the dead state), select ‘All’ from the dropdown menu. To accrue a particular value for one or more health states and a different value for all other states, first select the specific states for which you want to assign a particular value, and then select ‘All Other’ and specify the value you want to assign to all other health states. For Markov Cohort models and 3-state partitioned survival models, you also can assign values to state transitions rather than to state residency. To do so, first make sure ‘Transition’ is selected in the Type column, and select the ‘From’ state and the ‘To’ state (ie, transition) to which this value will be assigned. |
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Formula |
Formula that is used to calculate the value that is accrued during each cycle of a model (if a health state is selected) or a transition between health states (if state transition is selected). This formula should account for the cycle length of the model. |
You can find descriptions of additional functionality available on this page, and other similarly structured pages, here.
