Journal of Korean Gerontological Nursing 2011;13(3):215-223.
노인 환자에서 영양평가 도구인 Patient-Generated Subjective Global Assessment (PG-SGA) 의 타당도 평가
유성희, 이지은, 오현진, 박은영, 김윤정, 안영희
Validity of Patient-Generated Subjective Global Assessment (PG-SGA) in Hospitalized Older Patients
(Yoo, Sung-Hee · Lee, Gee Eun · Oh, Hyun Jin · Park, Eun Young · Kim, Yoon Jung · An, Young Hee
Abstract
Purpose This study was done to examine relevance of the Patient-Generated Subjective Global Assessment
(PG-SGA) to assess nutritional status of older hospitalized patients. Methods This methodology study was
performed between April 1 and August 30, 2010, in a tertiary hospital geriatric ward in Seoul. Data on demographics,
disease-related factors, and nutritional factors were identified using a structured research form. The
nutritional status was examined using the Geriatric Nutritional Risk Index (GNRI) score, body mass index, total
lymphocyte counts, hemoglobin, albumin, and cholesterol at admission. Accuracy of the nutritional assessment
by PG-SGA and GNRI, using a contingency table and ROC curve was compared with other nutritional parameters
of undernourished and well-nourished patients as classified by the PG-SGA. Results M±SD age of the patients
was 72±7.6 years, and 43 (59.7%) were female. Compared with the GNRI, the PG-SGA showed 90% sensitivity,
26% specificity, and 61% positive and 67% negative predictive values, and area under ROC curve (AUC) was
0.64. None of the nutritional parameters differed between the undernourished and well-nourished patients (all
p>.05). Conclusion Use of the PG-SGA alone is not valid for nutritional assessment of acutely ill hospitalized
older patients, and should only be used together with other objective nutritional parameters.
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