TY - JOUR
T1 - Evaluation of the Functional Assessment of Cancer Therapy-General (FACT-G) Spanish version 4 in South America
T2 - Classic psychometric and item response theory analyses
AU - Dapueto, Juan J.
AU - Francolino, Carla
AU - Servente, Liliana
AU - Chang, Chih Hung
AU - Gotta, Irene
AU - Levin, Roberto
AU - del Carmen Abreu, María
PY - 2003/8/20
Y1 - 2003/8/20
N2 - Background: The FACT-G has gone through many validation studies. However, little research has been conducted in South American Spanish speaking patients. The present study aimed to evaluate the FACT-G Spanish Version 4 in Uruguayan cancer patients. Methods: The data analyzed were collected from 309 patients, with various tumor sites, at different stages of disease and receiving different treatments. Results: Reliability was evaluated using Cronbach's coefficient alpha and showed high internal consistency for each of the subscales and its total scale (range = .78 - .91) of the FACT-G. The FACT-G total score also showed significant mean differences among known groups (performance status, in vs. outpatients) when tested by ANOVA and t-test. When the tumor stage (Local and Regional vs. Metastatic disease) was used as a clinical anchor, the FACT-G total score, the Physical Well-being (PWB), and Functional Well-being (FWB) subscale scores showed mean differences, ranging from 5 to 10 points in a scale from 0-108 (effect sizes = 0.30-0.60). Item response theory (IRT)-based evaluation using mean square fit statistics (.60-1.4) criteria showed that only two items misfit: "Estoy satisfecho(a) con mi vida sexual" (I am satisfied with my sex life) and "Estoy satisfecho(a) de cómo estoy enfrentando mi enfermedad" (I am satisfied with how I am coping with my illness). Conclusion: The results indicated that, using both traditional and IRT approaches, the Spanish FACT-G has good reliability and validity to be used as a QOL instrument among Uruguayan cancer patients.
AB - Background: The FACT-G has gone through many validation studies. However, little research has been conducted in South American Spanish speaking patients. The present study aimed to evaluate the FACT-G Spanish Version 4 in Uruguayan cancer patients. Methods: The data analyzed were collected from 309 patients, with various tumor sites, at different stages of disease and receiving different treatments. Results: Reliability was evaluated using Cronbach's coefficient alpha and showed high internal consistency for each of the subscales and its total scale (range = .78 - .91) of the FACT-G. The FACT-G total score also showed significant mean differences among known groups (performance status, in vs. outpatients) when tested by ANOVA and t-test. When the tumor stage (Local and Regional vs. Metastatic disease) was used as a clinical anchor, the FACT-G total score, the Physical Well-being (PWB), and Functional Well-being (FWB) subscale scores showed mean differences, ranging from 5 to 10 points in a scale from 0-108 (effect sizes = 0.30-0.60). Item response theory (IRT)-based evaluation using mean square fit statistics (.60-1.4) criteria showed that only two items misfit: "Estoy satisfecho(a) con mi vida sexual" (I am satisfied with my sex life) and "Estoy satisfecho(a) de cómo estoy enfrentando mi enfermedad" (I am satisfied with how I am coping with my illness). Conclusion: The results indicated that, using both traditional and IRT approaches, the Spanish FACT-G has good reliability and validity to be used as a QOL instrument among Uruguayan cancer patients.
UR - http://www.scopus.com/inward/record.url?scp=4243183584&partnerID=8YFLogxK
U2 - 10.1186/1477-7525-1-32
DO - 10.1186/1477-7525-1-32
M3 - Article
C2 - 12969512
AN - SCOPUS:4243183584
SN - 1477-7525
VL - 1
JO - Health and Quality of Life Outcomes
JF - Health and Quality of Life Outcomes
M1 - 32
ER -