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KMID : 0367020090210060559
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Journal of Korean Academic of Adult Nursing
2009 Volume.21 No. 6 p.559 ~ p.569
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The Reliability and Validity of Patient-Generated Subjective Global Assessment (PG-SGA) in Stroke Patients
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Yoo Sung-Hee
Oh Eui-Guem
Youn Mi-Jung
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Abstract
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Purpose: This study was to examine the reliability and validity of Patient-Generated Subjective Global Assessment (PG-SGA) as a nutritional measurement for stroke patients.
Methods: This was a methodological study performed from May 6 to June 10, 2009 at a tertiary university hospital in Seoul. For reliability of PG-SGA, inter-rater reliability was used for statistics. For concurrent validity, BMI and biomarkers were compared between PG-SGA 0 ~ 8 and ≥ 9. In addition, sensitivity, specificity, and predictive value of PG-SGA compared with SGA were calculated using a contingency table. For predictive validity, hospital day, complications, and readmission within 1-month after discharge were compared between PG-SGA 0 ~ 8 and ≥ 9.
Results: Correlation of PG-SGA score between two observers was 0.83, and kappa value for the agreement of severe malnutrition was 0.78(all ps < .001). The scored PG-SGA showed high sensitivity and specificity (100% and 96.7%, respectively). Severe undernourished patients (PG-SGA ≥ 9) had significantly low TLC, protein, albumin, and prealbumin (all ps < .01) compared with non-undernourished patients (PG-SGA 0 ~ 8). Also, in severe undernourished patients, complications and readmission (all ps = 0.01) were more often represented, and hospital days (p = .013) were significantly delayed.
Conclusion: PG-SGA is a reliable and valid measurement to assess nutritional status for stroke patients.
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KEYWORD
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Malnutrition, Stroke, Reliability, Validity, Nutritional assessment
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