Cross-cultural adaptation and validation of the geriatric 8 screening tool in Chinese hospitalized older adults with cancer

Abstract

Objectives: To translate, cross-culturally adapt, and validate the Geriatric 8 (G8) questionnaire in Chinese hospitalized older adults with cancer.

Methods: The Chinese version of the G8 (C-G8) was produced following Brislin's guidelines. The psychometric properties of the C-G8 were evaluated among 296 eligible patients.

Results: The content validity index of the C-G8 was 0.8∼1 at the item level and 0.975 at the scale level. The C-G8 identified more frail individuals among these older (>75 years) participants compared to their younger (65∼75 years) counterparts (frailty prevalence: 87.1% vs. 70.9%, P=0.010). The convergent validity of the C-G8 was tested by correlating it with the FRAIL scale (r=-0.592, P<0.001). The C-G8 had a lower internal consistency (Cronbach's α coefficient=0.501) but higher test-retest reliability and inter-rater reliability (intraclass correlation coefficient=0.913 and 0.993, respectively, P<0.001).

Conclusions: The C-G8 questionnaire presented acceptable validity and reliability and could be used in Chinese hospitalized older adults with cancer.

Keywords: Cancer; Cross-cultural adaptation; Frailty; Geriatric 8; Psychometrics.