14.5 TreeAge Pro Keywords
Keywords are reserved values auto-generated by TreeAge Pro that can be accessed within your model. You do not need to define them, you just use them at the appropriate place for the calculation or logical statement you are completing.
(Note that some of these Keywords are not used in Business or Legal models but they are used in Healthcare models. We leave the list here for completeness).
| Keyword |
Description
|
|---|---|
| _stage | Markov cycle counter (starts with 0) |
| _tunnel | Markov cycle-in-state counter (starts with 1), requires state to be configured with tunnel max value |
| _state_index | Index for the Markov state counting down from the top (top state is 1, next down is 2, etc.) |
| _strategy | Returns the number of the strategy, defined as a branch directly coming from a decision node (numbered top to bottom). The value is undefined to the left of the first decision node or if the model has no decision node. |
| _trial | Index for the trial/iteration being processed in the Microsimulation loop of a simulation (always 1 when not running Microsimulation) |
| _trial_size | Number of trials/iterations for the Microsimulation loop |
| _sample | Index for the sample/iteration being processed in the sampling/PSA loop of a simulation (always 1 when not running PSA) |
| _sample_size | Number of samples/iterations for the PSA simulation loop |
| _voi_sample | Index for the value of information (VOI) iteration being processed, the outer most simulation loop in EVPPI analysis (always 1 when not running EVPPI) |
| _voi_sample_size | Number of iterations for the outer most simulation loop in EVPPI analysis |
| _node_id | Returns the numeric identifier for a specific node |
| _node_label | Returns the label for a specific node |
| _thread_index | Index for the thread which is running all or a portion of the overall simulation (simulations can run as multiple threads to increase the speed of the simulation) |
| _parallel_trials_clock | The current _clock value during a parallel trials discrete event simulation that uses the _CLOCK value to keep the trials synchronized. |
| _parallel_trial_creator | If you turn off probability coherence, you can create individuals in a parallel trials simulation. This keyword can be used by a new trial to get the number of the trial that created it (i.e., via a transition/chance event with non-coherent probs). |
| _parallel_trials_set | The index for the current set of parallel trials. |
| _parallel_trials_sets_size | The number of sets of parallel trials in the simulation. |
| _cache_level | When using the Node() function to access parts of the tree, this returns the "depth" of the calls from nested Node() functions. |
