Selected model status:

Selected model status:

Alternatives are all the significant options or choices, which should be considered in the specific decision-making process.

Adding, editing or deleting alternatives is possible only in a draft model (before starting the poll).

Keep using the term “Alternatives” or change it to something more specific for your model.

You can add as many alternatives as you want. Predefined text (e.g. Alternative 1 and A1) is editable and you can replace it with appropriate alternatives for your model (e.g. depression, diabetes, multiple sclerosis, HIV/AIDS, breast cancer, cardiovascular etc.). Short names are used for better readability in tables and charts, throughout the tool.

You can add as many criteria as you want. Predefined text (e.g. C1 and Criterion 1) is editable and you can replace it with appropriate criteria for your model.

Criteria with continuous domains (amount, number, percent) can be set to any value within the specified min/max interval. Criteria with the discrete domains can be set only to the specific, predefined values for their domains, and therefore their minimum and maximum values aren’t editable.

Using the arrow button near Min/Max fields, declare whether the minimum (arrow down) or maximum (arrow up) value/option is more desirable for the particular criterion.

Determine how important each criterion is, compared to the other criteria in your model.

Criteria importance comparison table is initially prefilled with the equally distributed single pairwise criteria comparison values. These individual values are used to calculate the appropriate weight of each criterion (all weights per criterion in the model must sum up to 1). To modify the importance of each pair of criteria in your model, you can use the Pairwise Comparison.

To modify the importance of each criterion, compared to another criterion, you can use the Pairwise Comparison VAS (Visual-Analogue Scale). The comparison is actually changed after you confirm the edit using the OK/Next pair button. If you simply move the slider and close the scale without confirmation, the comparison will remain unchanged.

You can also click on the individual value in the Criteria importance comparison table to compare that specific pair of criteria.

The performance of each alternative in the model depends on the assigned criteria.

In the Performance matrix table you can set value for each alternative per criterion.

Numeric input fields (for continuous domains, such as amount, number or percent), allow simple numeric entries, to evaluate an alternative according to a particular criterion. Alternative with specific discrete criterion (e.g. Poor, Fair, Good or Very good) can be evaluated by selection of the appropriate option from the drop-down.

ZRx MCDM model is a scenario which completely defines a specific decision-making process. Model structure is very flexible in ZRx MCDM, so that it can be very simple (with only the list of criteria or alternatives), but it can also be consisted of a fully defined structure (alternatives and criteria), weightings and selected decision-making methods.

Use Create New tab to add a new model. List of existing models is also available for your review.

On the Open Existing tab you can open a model you want to work with. You can also delete a model that is no longer necessary for you or anyone else in your organization or group. The model can’t be deleted while opened.

Model(s) opened by other users(s) in your organization or group are marked with the closed-lock icon. Opened-lock icon marks the model that you open.

Modules available in ZRx MCDM are:

Choose which analyses by specific methods will be conducted in your model.

The Hurwicz method strikes a balance between choosing an alternative based on its best and its worst values across criteria. This method introduces a coefficient of realism (α), which represents the probability of selecting the best outcome with certainty.

This method was originally designed for addressing choice problems under uncertainty, in the context of game theory.

SLAM (Simple Linear Additive Model) is the most commonly value-based measurement model used in HTA. This method is appropriate for addressing ranking problems.

It is necessary to elicit preferences or weights associated with decision-making criteria. Once the weights attached to criteria are derived, the performance of alternatives across criteria is valued. For each alternative, a global value is calculated as the sum of the weighed performance across criteria. Finally, the global value is used for the rank ordering of alternatives from the highest to the lowest.

MAVT (Multi-Attribute Value Theory) method belongs to the family of value-based measurement models. It is appropriate for addressing both choice and ranking problems. The goal of this approach is to compute a global score for each competing alternative.

MAVT involves three steps:

Step 1 deals with the construction of a partial value function for each decision criterion. A value function can be defined as a tool that helps to measure decision-makers’ intensity of preference between the levels of a scale or descriptor.

Step 2 is to assess the relative importance of the criteria.

Step 3 consists in combining partial values and weights following the additive aggregation mechanism.

ELECTRE (“ELimination Et Choix Traduisant la REalité”, Elimination and Choice Expressing Reality) method can be used to address choice, ranking and sorting problems, under certain conditions. This method represents an alternative to the value-based measurement methods (SLAM and MAVT) when the decision-making must be based on at last three criteria, some of the criteria are measured on an ordinal scale, and compensation is not acceptable in the decision-making process. The unique feature of ELECTRE method is that the competing alternatives are compared pairwise. Through these pairwise comparisons, the decision makers’ preferences are captured using binary outranking relations, meaning ‘at least good as’. Once constructed, the outranking relations are exploited based on the type of problems.

Model settings allow you to:

- define the current phase in model development, by setting the model status,

- define groups of potential participants to the poll for the model,

- prepare and send the poll invitations and

- export data received in the poll.

A model status is determined by the current progress in model development and data collection. By its status, a model can be:

- Draft - indicating that the user can fill in all the input values, such as model structure and weightings, but still can't gather the results of the survey.

- Active poll - indicating that the model is opened for survey and that data is currently being collected from the participants invited to the poll.

- Archived- indicating that data collection for that model is completed, and that the model is closed for editing. At this point, the model can only be analyzed using all available methods

Each time that a model status is changed, that model is saved with all the edits made to it by that point.

A model status is determined by the current progress in model development and data collection. By its status, a model can be:

- Draft - indicating that the user can fill in all the input values, such as model structure and weightings, but still can't gather the results of the survey.

- Active poll - indicating that the model is opened for survey and that data is currently being collected from the participants invited to the poll.

- Archived- indicating that data collection for that model is completed, and that the model is closed for editing. At this point, the model can only be analyzed using all available methods

Each time that a model status is changed, that model is saved with all the edits made to it by that point.

All potential participants to the poll can be organized in groups, depending on the specifics of the model.

All potential participants to the poll can be organized in groups, depending on the specifics of the model.

Status of poll invitations can be:

- Draft, meaning that invitation hasn’t been sent to that participant.

- Invited, after the invitation was sent.

- Accessed, when the participant accesses the poll, but doesn’t submit the answer.

- Submitted, after the participant submits answer to the poll.

Status of poll invitations can be:

- Draft, meaning that invitation hasn’t been sent to that participant.

- Invited, after the invitation was sent.

- Accessed, when the participant accesses the poll, but doesn’t submit the answer.

- Submitted, after the participant submits answer to the poll.

Check who submitted the answer to the poll and export the answers.

Answers can either be exported as an MS Excel file, or entire table can be copy/pasted into any file format (MS Word, simple text file etc.).

Choose which data to export: all collected poll data, answers from the specific group, or answer from one particular participant.

Check who submitted the answer to the poll and export the answers.

Answers can either be exported as an MS Excel file, or entire table can be copy/pasted into any file format (MS Word, simple text file etc.).

Choose which data to export: all collected poll data, answers from the specific group, or answer from one particular participant.

Active poll status signifies that your model is ready for data collection. After the model parameters are set and the model saved, active poll status becomes available. You should change model status to active poll and fill in the poll list with appropriate information to be able to send invites to the potential poll participants.

Active poll status signifies that your model is ready for data collection. After the model parameters are set and the model saved, active poll status becomes available. You should change model status to active poll and fill in the poll list with appropriate information to be able to send invites to the potential poll participants.

Active poll status signifies that your model is ready for data collection. After the model parameters are set and the model saved, active poll status becomes available. You should change model status to active poll and fill in the poll list with appropriate information to be able to send invites to the potential poll participants.