Reliability and Construct Validity on Undergraduate Geriatric Questionnaire
The number of elderly people in Malaysia is increasing in trend due to better healthcare services provided by the government and increased awareness of the community towards disease prevention. Therefore, the knowledge of future medical doctors towards geriatric care should be upgraded at par to fulfill the needs of the older population. As a result, their level of knowledge should be assessed, particularly in terms of the fundamental concept of geriatrics. A new, invented, reliable and valid questionnaire is needed. This study aimed to develop and validate a newly developed questionnaire to assess the knowledge of medical students in geriatrics. The 23 items consist of true-false questions and one-based answer responses based on five domains of Giant I’s geriatric, namely immobility, instability, incontinence, cognition, and iatrogenic. The sample size is calculated using a five-to-one item ratio. The questionnaires were distributed to 143 medical students. Reliability was determined using Cronbach’s alpha for internal consistency, while construct validity was assessed using factor analysis. An acceptable internal consistency was observed (Cronbach’s alpha = 0.62). Factor analysis showed two meaningful finalized components, which represent the geriatric general knowledge and the Giant I’s. According to the findings of this study, this questionnaire is a reliable and valid tool for assessing medical students' knowledge of geriatric.
Keywords: Geriatric, Reliability, Construct Validity, Undergraduate Geriatric, Questionnaire