Table 2 Selection bias in ASD research on intellectual dis/ability for studies that reported data (n = 165)
Field | Total N | Studies where over 75% of the sample had No ID | Studies where the entire sample had No ID | Estimated % of ASD participants without IDa (95% CI) | ||
|---|---|---|---|---|---|---|
N | % | N | % | Â | ||
Intervention | 12 | 8 | 67 | 5 | 42 | 87 (68, 99) |
Biology | 24 | 22 | 92 | 14 | 58 | 97 (92, 1.00) |
Epidemiology | 8 | 4 | 50 | 2 | 25 | 84 (43, 100) |
Psychology | 78 | 68 | 87 | 45 | 57 | 97 (94, 99) |
Social | 23 | 8 | 80 | 9 | 39 | 87 (80, 93) |
Diagnosis | 20 | 19 | 83 | 4 | 20 | 84 (82, 94) |
Overall | 165 | 136 | 82 | 79 | 48 | 94 (91, 97) |