Table 2: Accuracy of screening tools at identify malnutrition (as determined by Subjective Global Assessnent).
| Screening tool | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) | AUC (95% CI) | AUC discrimination |
| SNST | 91.2% (85.3-95.2) |
81.6% (75.1-87) |
80.2% (73.4-86) |
91.8% (86.4-95.6) |
0.87 | Excellent |
| (0.82-0.91) | ||||||
| NRS-2002 | 79.6% (72.2-85.8) |
65.9% (58.5-72.8) |
65.7% (58.3-72.7) |
79.7% (72.3-85.9) |
0.73 | Acceptable |
| (0.67-0.79) | ||||||
| MST | 62.6% (54.2-70.4) |
89.4% (83.9-93.5) |
82.9% (74.6-89.4) |
74.4% (68-80.1) |
0.77 | Acceptable |
| (0.71-0.83) | ||||||
| MUST | 88.3% (81.7-93.2) |
64% (56.5-71.1) |
65.4% (58.1-72.2) |
87.7% (80.8-92.8) |
0.76 | Acceptable |
| (0.71-0.81) | ||||||
| SNAQ | 68% (59.8-75.5) |
86% (80.1-90.7) |
80% (71.9-86.6) |
76.6% (70.1-82.3) |
0.78 | Acceptable |
| (0.72-0.83) |
SNST: Simple Nutrition Screening Tool; NRS: Nutritional Risk Screening-2002; MST: Malnutrition Screening Tool; MUST: Malnutrition Universal Screening Tool; and
SNAQ: Short Nutritional Assessment Questioner; PPV: Positive Predictive Value; NPV: Negative Predictive Value; CI: Confident Interval; AUC: Area Under the Curve.
*Classification of AUC (range 0-1); acceptable 0.70-0.80, excellent 0.80-0.90.