First, and just as is the case with the multiple matrix sampling for the test, it is desirable to limit the amount of time students are required to concentrate on completing a questionnaire while simultaneously providing opportunity to increase the content coverage of the questionnaires.
The analysis also focused on the instructions and content coverage of the questionnaires to ensure items fully captured the impact of ADHD on functioning.
The motivation for using rotated questionnaires in order to extend the coverage of the student questionnaire stems from several somewhat related reasons.
At the time of the administration of the coverage survey questionnaire, the coverage survey team informed potential serosurvey participants to meet the serosurvey team at these workstations at a specified time.
Analysis of the concept coverage of the HAE PRO questionnaire confirmed that all concepts included in the measure are relevant to HAE patients across different attack types.
A number of questionnaires with varying coverage of symptoms, quantitative indices of withdrawal and psychometric properties have been developed for this purpose [ 10, 11].
Furthermore, the comprehensive coverage of relevant issues in the questionnaires made it possible to validate variables against each other and to some extent compensate for recall bias and underreporting.
The instrument was constructed from a review of available literature on immunization coverage, WHO questionnaire, and EDHS for immunization coverage and translated in to local language [ 8, 15, 16].
From the additional triggers mentioned by patients, tiredness (n = 8) was added to the revised questionnaire.> Coverage of HAE warning signs included in the draft HAE PRO and reported by patients spontaneously can be found in Table 5.
