Table IV.
Selected mean percentiles (standard deviation) from simulation studies.
| Estimation method | 5th | 10th | 25th | 50th | 75th | 90th | 95th |
|---|---|---|---|---|---|---|---|
| Simulation I: Calcium (n = 300) | |||||||
| Truth | 327 | 389 | 511 | 675 | 873 | 1087 | 1230 |
| 2d mean | 233 (16) | 299 (16) | 443 (17) | 648 (18) | 914 (26) | 1210 (43) | 1421 (58) |
| ISU method | 327 (23) | 389 (22) | 510 (19) | 674 (19) | 873 (28) | 1084 (45) | 1228 (59) |
| NCI method | 327 (19) | 389 (18) | 510 (17) | 674 (16) | 873 (22) | 1085 (35) | 1227 (46) |
| Simulation II: Vitamin A (n = 500) | |||||||
| Truth | 2208 | 2752 | 3974 | 6001 | 9056 | 13 112 | 16 371 |
| 2d mean | 1001 (100) | 1473 (111) | 2702 (159) | 5066 (255) | 9181 (498) | 15 289 (1002) | 20 636 (1575) |
| ISU method | 2471 (275) | 3078 (278) | 4382 (273) | 6372 (279) | 9108 (434) | 12 391 (801) | 14 814 (1143) |
| NCI method | 2475 (273) | 3082 (278) | 4386 (270) | 6367 (278) | 9074 (428) | 12 303 (779) | 14 671 (1097) |