The phrase "accuracy of the questionnaire" is correct and usable in written English.
It can be used when discussing the precision or correctness of the responses obtained from a questionnaire or the design of the questionnaire itself.
Example: "The accuracy of the questionnaire is crucial for obtaining reliable data in our research study."
Alternatives: "reliability of the questionnaire" or "validity of the questionnaire".
The diagnostic accuracy of the questionnaire was acceptable, with better sensitivity (0.71) for migraine than for TTH (0.61).
The diagnostic accuracy of the questionnaire was assessed by calculating sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) for migraine and TTH using the face-to-face interview as gold standard.
To ensure accuracy of the questionnaire data, every 20th questionnaire entered is checked prior to analysis.
The first problem is translation accuracy of the questionnaire in the context of culture [ 22].
On this basis, we examined the diagnostic accuracy of the questionnaire in the next step.
The accuracy of the questionnaire was checked, and certain differences in translation were removed.
It is also possible that the age of participants may have contributed to the diagnostic accuracy of the questionnaires.
Because correlations between the questionnaires and the reference instrument (i.e. the accelerometer) are interpreted as measures of the accuracy of the questionnaires, it is desirable to correct for limitations of the reference instrument that reduce these correlations.
In other words, it is unlikely that the exclusion of patients with obvious depressive and anxiety disorders in our study has resulted in an overestimation of the diagnostic accuracy of the questionnaires.
The accuracy of the questionnaires was evaluated using Receiver Operator Characteristic (ROC) curves with the Area Under the Curve (AUC) used to examine each test's accuracy to discriminate participants with insomnia from those without insomnia.
The success of screening however, is largely dependent on the accuracy of the questionnaires and use diagnostic procedures, used as the gold standard, to evaluate the effectiveness of screening questionnaires.
