Ordinal Outcome Analysis

Use this page as a cautious guide to ordinal outcomes and why they should not be treated as simply binary or continuous by default.

What this method is

This page is a concept guide for outcomes that have an order but do not behave like unrestricted continuous measurements.

Ordinal outcomes sit between simple binary outcomes and truly continuous responses. The categories are ranked, but the distance between adjacent categories is not necessarily uniform or interpretable on a continuous scale.

That difference matters because a naive binary or continuous treatment can flatten information that the ordered categories were meant to preserve.

When to use or avoid

Use this page when:

  • the response categories have a meaningful order
  • collapsing the outcome to yes/no would remove important structure
  • treating the categories as evenly spaced continuous values would be hard to justify

Avoid reading this page as evidence that a dedicated ordinal-model route is already available in the current product.

  • Do not assume ordered-logit, ordered-probit, or proportional-odds support is available now.
  • Do not use this page to claim that ordinal outcomes already have a stable end-to-end product workflow.

Required inputs

Conceptually, ordinal analysis usually needs:

  • a response with ordered categories
  • clear category meaning
  • predictors or grouping variables aligned with the analysis question

The current repo does not yet confirm one dedicated public input contract for ordinal modeling.

Outputs

No dedicated ordinal-analysis output schema was confirmed in this pass.

The safest current framing is that this page helps readers understand why ordinal outcomes deserve special handling, while the product support boundary remains incomplete.

No dedicated ordinal-outcome figure family was confirmed in this pass.

Interpretation notes

  • Ordinal outcomes should not automatically be treated as either binary or continuous.
  • The page is useful as a reasoning aid even though a dedicated ordinal execution path is not yet confirmed.
  • Current docs should stay weaker than the page title might suggest.

Limits

  • No ordered-logit, ordered-probit, or proportional-odds route was confirmed in this pass.
  • No dedicated ordinal output contract, UI surface, or tests were confirmed.
  • This page should remain a low-claim guide until implementation evidence is stronger.

TODO (Phase02+)

  • Confirm dedicated ordinal-model support before making implementation-level claims.