caa a22 4500 477084893 CHVBK 20180405111501.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF00433916 doi (NATIONALLICENCE)springer-10.1007/BF00433916 Functional Assessment of Cancer Therapy (FACT-G): Non-response to individual questions [Elektronische Daten] [D. Fairclough, D. Cella] The purpose of this investigation is to examine methods of scoring the FACT-G when there is nonresponse to individual questions. Using completed questionnaires from 350 patients, random and nonrandom missing responses where simulated. Seven methods of scoring the FACT-G are compared on the basis of accuracy (bias and precision) of both population estimates and prediction of individual scores. Substituting the mean of the completed items in the subscale when more than 50% are completed is generally the most unbiased and precise approach. Case deletion is the worst approach and results in clinically significant bias when the missing responses were non-random and a lack of precision when the rate of non-response was high. Rapid Science Publisher, 1996 Imputation nationallicence missing data nationallicence non-response nationallicence quality of life nationallicence Fairclough D. Division of Biostatistics, Dana Farber Cancer Institute, 44 Binney St, 02115, Boston, MA, USA aut Cella D. Rush-Presbyterian-St Luke's Medical Center, 1725 West Harrison Street, 60612, Chicago, IL, USA aut Quality of Life Research Kluwer Academic Publishers 5/3(1996-06-01), 321-329 0962-9343 5:3<321 1996 5 11136 https://doi.org/10.1007/BF00433916 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00433916 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fairclough D. Division of Biostatistics, Dana Farber Cancer Institute, 44 Binney St, 02115, Boston, MA, USA aut NATIONALLICENCE 700 1- Cella D. Rush-Presbyterian-St Luke's Medical Center, 1725 West Harrison Street, 60612, Chicago, IL, USA aut NATIONALLICENCE 773 0- Quality of Life Research Kluwer Academic Publishers 5/3(1996-06-01), 321-329 0962-9343 5:3<321 1996 5 11136 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer