Table 2.
Comparison of ever lead exposure determined by expert assessment with exposure determined by a job exposure matrix for meningioma cases and controls in the NCI Brain Tumor Study
| Overall | ALAD1 | ALAD2 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||
| Expert | Expert | Expert | ||||||||||
| JEM | 0 | 1 | U | JEM | 0 | 1 | U | JEM | 0 | 1 | U | |
| 0* | 364 | 122 | 2 | 0 | 298 | 100 | 2 | 0 | 66 | 22 | 0 | |
| 1* | 28 | 134 | 0 | 1 | 22 | 111 | 0 | 1 | 6 | 23 | 0 | |
| U* | 4 | 2 | 0 | U | 2 | 1 | 0 | U | 2 | 1 | 0 | |
| Sensitivity† | 0.52 | 0.53 | 0.51 | |||||||||
| Specificity† | 0.93 | 0.93 | 0.92 | |||||||||
| % agreement | 76 | 76 | 74 | |||||||||
| Kappa | 0.47 | 0.48 | 0.43 | |||||||||
*
0 = never, 1 = ever, U = unknown
†
Restricted to non-missing data