Chinesization the CP - FI - CGA questionnaire which is common used in foreign countries, and evaluate its reliability and validity.

CP - FI - CGA questionnaire was translated and cross-cultural revised. 300 patients of geriatric ward of 4 top three general hospitals were selected to evaluate the reliability and validity. Independent sample t-test was applied to test the degree of differentiation, simple correlation analysis was to test internal consistency reliability, test-retest reliability, split-half reliability, criterion-related validity, and construct validity. Cronbach's alpha coefficient was to calculate internal consistency.

Delete the item 36 (no able to drive), and add the new entry "have major surgery within six months". The final questionnaire has 43 items. The retest reliability r=0.97, test-retest reliability r=0.995, split-half reliability r=0.851,internal consistency Cronbach's a=0.883. The I-CVI of 44 items was from 0.727 to 1. The S - CVI/Ave of questionnaire is 0.986. Coefficient with CFS simple correlation r=0.829 (P<0.01). The simple correlation of coefficient with age r=0.449 (P<0.01). The simple correlation coefficient between each item and FI r=0.131-0.719 (P<0.01). The patients' acceptance of item length, item content and questionnaire's content scope was 100%. The acceptance of length of the questionnaire's was 98.67%. The questionnaire's completion time was (5.45±0.65 min). Men and women patients' frailty level distribution and FI scores had no statistically significance (z =-0.875, t=1.170; P>0.05).

Chinesization of CP-FI-CGA questionnaire has high acceptability, good validity and reliability which can be used for screening geriatrics patients, frailty degree and provide reference for clinical grading nursing.