When it comes to getting a lot of information in a short period, a questionnaire may be the answer. Questionnaires contain lists of questions in open-ended or closed-ended formats. While it takes time ...

Objective To compare three different methods of administering a brief screening questionnaire to elderly people: post, interview by lay interviewer, and interview by nurse. Design Randomised ...

Methods A new method, including a new overuse injury questionnaire, was developed and validated in a 13-week prospective study of injuries among 313 athletes from five different sports, cross-country ...

Historically, public opinion surveys have relied on the ability to adjust their datasets using a core set of demographics – sex, age, race and ethnicity, educational attainment, and geographic region ...

Background: Reliability or validity studies are important for the evaluation of measurement error in dietary assessment methods. An approach to validation known as ...

This study looks at how national public opinion polling in the United States changed from 2000 to 2022. It focuses on two aspects: the sample source(s) – that is, where the survey takers came from – ...