Table 6.
A Summary of the Effect of Inadequate Follow-Up of Controls on the Risk of Exposure to Hg From Hib-Containing Vaccine Administration Within the First 15 Months of Life for the Cases Diagnosed With a Studied Abnormal Connectivity Spectrum Disorder and the Reduced Follow-Up Controls.a
| Group Examined (ICD-9 Code) | 25 μg Hg (%; Reference Dose) | 50 μg Hg (%) | 75 μg Hg (%) | 100 μg Hg (%) | Odds Ratio per μg 25 Hg (95% CI; P Value) |
|---|---|---|---|---|---|
| ASD cases (299.xx) | 26 (6.5) | 28 (7) | 265 (66.1) | 82 (20.4) | 0.950 (0.825-1.075; >.40) |
| Controls | 4135 (6.1) | 4505 (6.6) | 44 577 (65.3) | 15 020 (22) | |
| Tic cases (307.2x) | 14 (5.8) | 20 (8.3) | 162 (67.2) | 45 (18.7) | 1.050 (0.875-1.225; >.50) |
| Controls | 3573 (7.6) | 3622 (7.7) | 31 174 (65.9) | 8911 (18.8) | |
| ADD/ADHD cases (314.xx) | 104 (10) | 82 (7.9) | 676 (64.9) | 179 (17.2) | 0.975 (0.900-1.063; >.70) |
| Controls | 3236 (9.2) | 2968 (8.4) | 23 126 (65.4) | 6003 (17) |
Abbreviations: ADD/ADHD, attention deficit disorder/attention deficit hyperactivity disorder; ASD, autism spectrum disorder; Hib, Haemophilus influenzae type b; Hg, mercury.
aThese controls were followed to the mean age of initial diagnosis.