Assumptions and method

When to be cautious

Define meaningful use and the measurement window. Usage alone does not prove benefit or satisfaction.

Adoption = active users / eligible population

Test a scenario

Use your own inputs

Inputs stay in your browser. Shared scenario links include your inputs.

Use the result in a decision

Identify whose behaviour must change and how adoption will be observed.

Define meaningful use and the measurement window. Usage alone does not prove benefit or satisfaction.

Set a baseline and change one assumption to compare outcomes.

A worked example

Follow the fixed teaching example
  1. Adoption = 150/200 × 100 = 75%.
  2. Compared with a 50% baseline, the increase is 25 percentage points. This alone does not establish benefit or causation.

These illustrative inputs describe a project scenario, not a published benchmark. All monetary inputs use the same currency and price basis.

Eligible people
200
Active adopters this period
150
Baseline adoption rate (%)
50
Adoption rate
75 %
Change from baseline
25 percentage points

Interpret the output only within the assumptions above. Changing the inputs changes the result; it does not validate the inputs.

Source & credit

Standard estimating practice; the cited guide documents use rather than claiming invention.

GAO: Cost Estimating and Assessment Guide

This is independently written code and explanation of the underlying method. The linked publication, its diagrams and its trademarks remain its owner’s material; no permission to reuse them is implied.

Learn and apply

Explore change: guides, calculations and sources