Table 3.
Expected LQAS performance metrics where decision rules are chosen to maximize GFOM with weighting function w3(.) and weights w1 = 0.52, w2 = 0.48 for detecting both poor (p* = pL) and good (p* = pU) performance for a fixed sample size of n = 18
| World Measles Vaccination Coverage |
|||||
|---|---|---|---|---|---|
| 1968–1989 |
2008 |
||||
| For Detecting Poor (p* = pL, d = 10) | For Detecting Good (p* = pU, d = 14) | For Detecting Poor (p* = pL, d = 9) | For Detecting Good (p* = pU, d = 13) | ||
| Performance Metric | Sensitivity | 82.3% | 90.6% | 85.1% | 98.9% |
| Specificity | 91.9% | 93.4% | 98.2% | 54.1% | |
| PPV | 76.8% | 77.0% | 43.8% | 86.4% | |
| NPV | 94.1% | 93.5% | 99.8% | 94.4% | |