States is the third stop on the hēRo3 Subway. Here, you can define the health states that you want to include in your model. While there is no maximum number of health states that a model may contain, models must contain at least one health state. States are displayed in tabular format, with each row representing a unique health state, and with the following columns:
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Column |
Description |
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Name |
Name of the health state. Names must start with a letter and may only contain letters, numbers, and underscores. Names are limited to 20 characters in total length. |
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Description |
A description of the health state. Descriptions have no restrictions on the types of characters used and can be up to 30 characters in total length. |
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State Group |
If relevant, a group to which a given health state belongs. State groups are a convenience feature that allows you to combine multiple health states for display together on the Trace page. To make multiple states part of a particular group, simply enter the same value under ‘State Group’ for each state that is part of the group. If you do not want a state to be part of a group, leave this field blank. |
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MTS (Maximum Tunnel States) |
MTS allows you to control the creation of tunnel states. When a transition probability or a value used for a given health state references state time, that health state is automatically expanded into a series of tunnel states that are used to keep track of how long patients have been in that health state. MTS is the maximum number of tunnel states created for a given state. By default, MTS is set to 0, meaning that there is no limit and the number of tunnel states created will be equal to the number of cycles in your model.
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Initial Probability |
Initial probability is a formula that specifies the probability that patients are in each health state at the beginning of the model. Probabilities must sum to 1 across all of your health states. The keyword, C, can be used to automatically calculate the complementary probability (ie, one minus the probability of starting in all other health states).
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You can find descriptions of additional functionality available on this page, and other similarly structured pages, here.
