Table 2. Agreement Metrics for Patient-Reported and Electronic Health Record–Derived Demographic Characteristicsa.
| Variable | % (95% CI) | κ Statistic | ||||
|---|---|---|---|---|---|---|
| Overall agreement | Sensitivityb | Specificity | PPV | NPV | ||
| Non-Hispanic | ||||||
| Black | 99.4 (99.2-99.5) | 98.0 (97.1-98.7) | 99.5 (99.4-99.6) | 95.5 (94.2-96.5) | 99.8 (99.7-99.9) | 0.96 (0.96-0.97) |
| White | 97.9 (97.7-98.2) | 99.4 (99.2-99.5) | 89.7 (88.3-91.0) | 98.2 (97.9-98.4) | 96.4 (95.5-97.2) | 0.92 (0.91-0.93) |
| Otherc | 98.3 (98.1-98.6) | 47.1 (41.8-52.5) | 99.8 (99.6-99.8) | 83.8 (77.9-88.6) | 98.6 (98.3-98.8) | 0.60 (0.55-0.64) |
| Hispanic | 99.2 (99.0-99.3) | 82.5 (80.8-88.0) | 99.6 (99.5-99.7) | 88.7 (85.2-91.6) | 99.5 (99.4-99.6) | 0.86 (0.84-0.89) |
| Current smoker | 95.3 (94.9-95.7) | 79.7 (77.0-82.2) | 96.9 (96.5-97.3) | 72.8 (70.0-75.5) | 97.9 (97.6-98.2) | 0.74 (0.71-0.76) |
Abbreviations: NPV, negative predictive value; PPV, positive predictive value.
a
Patient-reported data were used as the criterion standard for all demographic comparisons.
b
Sensitivity population excluded 600 patients with no portal visits and excluded events that occurred after the last visit.
c
A category for race in the online portal, so no additional breakdown is available.