What experience does this invitation ask you to have had?
Check whether the stated experience matches the intended invitation cohort.
Survey design and interpretation / Survey guide
Survey methods · Worked example
Survey participation and completion denominators
Distinguish invited people, started questionnaires and completed questionnaires before reporting a survey participation percentage.
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WHAT TO READ · WHAT TO TEST
Observation
Synthetic cohort: 40 eligible people invited, 20 started and 12 finished. One draft uses 40 as its denominator; another uses 20.
Interpretation boundary
This invited-cohort calculation is not a formal AAPOR response-rate estimate. Unknown eligibility, duplicate invitations and partial cases require an explicit disposition policy.
Next experiment
Report 12/40 invited-cohort participation and 12/20 started-questionnaire completion separately; document who entered each count.
Illustrative scenario. These are not real response counts or findings.
A useful starting point
Free-text pilot questions
A feedback owner has a known eligible invitation list but a report labels two different percentages “response rate.” Use the worked cohort below and pilot the invitation before choosing a reporting denominator.
If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.
Which part of the invitation explains why you were contacted?
Find ambiguity in eligibility rather than interpreting nonparticipation as disinterest.
What would help you decide whether to start the questionnaire?
Separate unclear purpose from missing access or time.
Which instruction is unclear if you begin but cannot finish?
Clarify the partial-completion route without pressuring people to finish.
If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate. What experience does this invitation ask you to have had? Which part of the invitation explains why you were contacted? What would help you decide whether to start the questionnaire? Which instruction is unclear if you begin but cannot finish?
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Examples to adapt, rather than a validated research instrument.
Before you send it
Check what your wording assumes.
Why did you ignore our important survey?
What would help you decide whether to start the questionnaire?
The revision asks about participation barriers without assuming deliberate refusal.
Choose the response format
Make room for the explanation.
| Question | Suggested format | What to preserve |
|---|---|---|
| What experience does this invitation ask you to have had? | Optional short open text | Check whether the stated experience matches the intended invitation cohort. |
| Which part of the invitation explains why you were contacted? | Optional short open text | Find ambiguity in eligibility rather than interpreting nonparticipation as disinterest. |
| What would help you decide whether to start the questionnaire? | Optional short open text | Separate unclear purpose from missing access or time. |
| Which instruction is unclear if you begin but cannot finish? | Optional short open text | Clarify the partial-completion route without pressuring people to finish. |
Make questions optional where appropriate. If you add a rating scale, label its endpoints, keep one idea per question, and retain a follow-up for reasons. These examples are not a validated measurement instrument.
From question to next step
Make the feedback useful.
Set the decision
Pilot with a few people who fit the invitation rule before sending the full questionnaire; participation is optional.
Invite relevant voices
Report 12/40 invited-cohort participation and 12/20 started-questionnaire completion separately; document who entered each count.
Choose an action
Reconcile the next cohort’s invitation, start and finish counts using the same definitions; inspect why eligible people could not participate.
A worked interpretation example
From a comment to a practical next step.
Illustrative scenario. These are not customer results.
Keep the finding specific
Synthetic cohort: 40 eligible people invited, 20 started and 12 finished. One draft uses 40 as its denominator; another uses 20.
Choose an action to test
Report 12/40 invited-cohort participation and 12/20 started-questionnaire completion separately; document who entered each count.
Check the experience again
Reconcile the next cohort’s invitation, start and finish counts using the same definitions; inspect why eligible people could not participate.
Read the answers carefully
Limits to preserve
This invited-cohort calculation is not a formal AAPOR response-rate estimate. Unknown eligibility, duplicate invitations and partial cases require an explicit disposition policy.
Reporting note: 30% of the known eligible invitation cohort finished; 60% of starters finished. This is descriptive cohort reporting, not a formal response-rate or representativeness claim.
Run a focused feedback cycle
Plan the invitation, review and follow-up.
When and whom to ask
Pilot with a few people who fit the invitation rule before sending the full questionnaire; participation is optional.
Who reviews the finding
The survey owner defines eligibility and distinct invitations; the reporting reviewer checks all three counts.
What to check after a change
After clarifying the invitation, review participation barriers under the same inclusion rule; do not attribute a changed percentage to wording alone.
Handle responses carefully
Keep contact details out of this worksheet. Explain whether pilot comments can be linked to an invitation record; accept a skip without repeated pressure.
A worked measurement study
Inspect the data. Trace the decision.
Every record here is synthetic. Use the rule to review your own evidence before taking action.
Invented records · inspect every count
| Known-cohort count | People |
|---|---|
| Eligible invited people | 40 |
| Distinct starters | 20 |
| Distinct finishers | 12 |
On small screens, scroll a wide table sideways to see all columns.
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Try the arithmetic
Local calculation sandbox
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The written example remains below if JavaScript is unavailable. A calculation does not validate a sample, instrument or forecast.
Work through the rule
Invited-cohort participation = 12÷40×100 = 30%. Completion among starters = 12÷20×100 = 60%. Both use 12 finishers but answer different questions.
Reporting note: 30% of the known eligible invitation cohort finished; 60% of starters finished. This is descriptive cohort reporting, not a formal response-rate or representativeness claim.
Keep evidence and inference separate
Observed
Known invitation, start and finish counts
Supports two labelled percentages.
Unknown
Views of people who did not respond
Do not infer satisfaction or population coverage.
Next check
Inspect eligibility and duplicate-invitation policy
Resolve the denominator before comparing campaigns.
Before you send it
Questions, answered.
Which denominator should a completion percentage use?
Here it uses distinct starters. A percentage among eligible invitees is a separately named measure.
Does high participation prove an unbiased sample?
No. Document who could participate and whose experience may be missing.
Where can I find formal response-rate guidance?
Use the linked AAPOR resources and an appropriate disposition definition; this simple sandbox does not implement those formulas.
Can I load this example automatically?
No. Copy or download the free-text pilot questions and adapt them in your draft. The registration link does not import them. The calculation worksheet is a separate manual example; verify supported fields and features in your account.
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