What is Item Nonresponse Rate?
Item nonresponse rate is the share of respondents who skip or leave a specific question blank. It shows which questions are being avoided or not answered within a survey.
Item nonresponse rate measures how often a particular question (an item
) is left unanswered by people who reached it. It’s usually calculated as: (number of respondents who skipped the item) ÷ (number of respondents eligible or who reached that item). The rate can be reported as a percentage. High item nonresponse can come from unclear wording, sensitive topics, poor question design, technical problems, or language barriers — so it’s a signal to investigate why people aren’t answering a question.
Usage example
You ran a school feedback survey in three languages. 400 people reached Question 7 about household income but 60 left it blank. Item nonresponse rate = 60 ÷ 400 = 0.15 → 15%. You compare that to the same question in each language and find the Somali version has a 28% item nonresponse rate, suggesting a translation or cultural sensitivity issue.
Practical application
Why it matters: item nonresponse reduces usable data for analysis and can introduce bias if certain groups are more likely to skip a question. In multilingual programs like Hearo, tracking item nonresponse by language helps spot translation problems, confusing phrasing, or culturally sensitive items. Practical steps when you see a high rate: review the question wording and translation, check mobile or form layout, consider changing question type (e.g., multiple choice instead of free text), make the question optional or provide prefer not to say
choices, and ask participants to flag unclear wording so you can improve translations over time. Monitoring item nonresponse helps you improve response quality and inclusion across communities.
FAQ
How is item nonresponse different from overall survey nonresponse?
Overall survey nonresponse measures people who don’t take the survey at all. Item nonresponse measures skipped or blank answers within surveys that respondents did start. Both matter, but item nonresponse pinpoints problems with specific questions rather than recruitment or access.
Which denominator should I use when calculating item nonresponse rate?
Use the number of respondents who were eligible or who actually reached the item (for example, after skip logic). Using total invites or total starts can under- or overstate the issue. Be consistent and document your choice.
Is a high item nonresponse rate always bad?
Not always. For sensitive questions (income, health) higher nonresponse may reflect reasonable privacy concerns. But for essential questions, high nonresponse usually signals a design, translation or usability problem that needs fixing.
How can I reduce item nonresponse in multilingual surveys?
Review translations and allow participants to flag unclear wording; simplify phrasing; offer a prefer not to say
option; change question format to reduce typing; test on mobile; and compare rates by language to identify where to update wording or provide cultural context.