A 7-item questionnaire for theoretical knowledge of basic life support (BLS): proposal and validation.
Purpose of the study: Effective abilities in BLS require good theoretical bases. This study aims to create a short and quick questionnaire for notional knowledge of BLS and to validate it in BLS courses.
Materials and methods: A multiple choice 7-item test was developed according to 2015 guidelines: airways (items 1,3), breathing (4), circulation (5), defibrillation (6,7); item 2 was about the chain of survival. Questions were thought to be different in difficulty. Sixty BLS courses were held and 150 laypersons (LPs) and 226 student nurses (SNs) were asked to complete the developed questionnaire before and after theoretical lessons.
Results: Participants filled the form in few minutes (median: 3, range: 2-6). Among LPs, median pre-test and post-test scores were 4 (range: 0-7) and 7 (range: 3-7). Among SNs, they were 6 (range: 1-7) and 7 (range: 6-7), respectively. The 7 matched items of pre-test reached dissimilar proportion of correct answers in LPs and SNs (Cochran’s Q tests, P