Abstract: Objective To evaluate the quality of Frailty Screening Questionnaire (FSQ) in older adults in terms of acceptability, reliability and validity. Methods A total of 249 older adults aged ≥60 years were selected for frailty screening and assessment using FSQ and Fried Frailty Phenotype. Acceptability was evaluated through scale acceptance rate, criterion attainment rate, and completion time. Internal consistency reliability was assessed using Cronbach’s α, Spearman-Brown coefficient and Guttman split-half reliability. Exploratory factor analysis was used to evaluate construct validity. Criterion validity was evaluated by comparing the correlations of the FSQ with the Fried Frailty Phenotype. Results Acceptability analysis demonstrated a 100% acceptance rate and 100% pass rate for the scale, with completion time within 1 minute. Internal consistency reliability tests showed the FSQ’s Cronbach’s α coefficient, Spearman-Brown coefficient, and Guttman split-half coefficients were 0.608,0.516, and 0.472 respectively. Exploratory factor analysis identified two common factors contributing 62.08% of total variance, with item factor loadings ranging from 0.487 to 0.924. Validity assessment revealed a significant correlation coefficient of 0.683 (P<0.001) between the FSQ and Fried’s Frailty Phenotype. Conclusions FSQ has good acceptability, reliability and validity, which can be used as a reliable tool for the screening of frailty in the elderly.

Key words: Frailty Screening Questionnaire, frailty, aged, validity, reliability