Table 6 Specificity, PPV, and NPV for receipt of any CRC-related care in VA administrative data versus EMR/QI manual data abstraction
Test or Treatment | Specificity (95 % CI) | Positive Predictive Value (95 % CI) | Negative Predictive Value (95 % CI) |
|---|---|---|---|
Colonoscopy | 0.834 (0.795, 0.869) | 0.713 (0.650, 0.768) | 0.923 (0.890, 0.947) |
Carcinoembryonic antigen | 0.898 (0.851, 0.932) | 0.888 (0.836, 0.925) | 0.524 (0.475, 0.574) |
History and physical | 0.771 (0.682, 0.841) | 0.949 (0.925, 0.965) | 0.978 (0.917, 0.996) |
Surgery | 0.615 (0.407, 0.791) | 0.982 (0.967, 0.991) | 0.314 (0.195, 0.460) |
Neo-adjuvant chemotherapy | 0.918 (0.891, 0.938) | 0.407 (0.301, 0.522) | 0.994 (0.982, 0.999) |
Adjuvant chemotherapy | 0.889 (0.854, 0.916) | 0.716 (0.641, 0.781) | 0.855 (0.818, 0.886) |
Neo-adjuvant radiation | 0.994 (0.982, 0.999) | 0.936 (0.814, 0.983) | 0.928 (0.903, 0.947) |
Adjuvant radiation | 0.810 (0.775, 0.840) | 0.178 (0.119, 0.255) | 0.977 (0.958, 0.988) |