Table 1.
Study characteristics.
| Characteristic | N (% Total N) |
|---|---|
| Total Records | 172 |
| Age | |
| 0-5 years old | 55 (32) |
| 6-10 years old | 48 (28) |
| 11-15 years old | 66 (38) |
| 15-18 years old | 3 (2) |
| Sex/Gender | |
| Females Included | 141 (82) |
| All Male | 28 (16) |
| Sex/gender Not Reported | 3 (2) |
| IQ | |
| IQ Not Reported | 53 (31) |
| IQ Matched Groups | 38 (22) |
| ASD Avg. IQ Lower | 35 (20) |
| No Group Difference | 25 (15) |
| Threshold 75 | 13 (7) |
| Threshold 80 | 8 (5) |
| Sample Size | |
| N<50 (MRS, MEG, fNIRS) | 28 (16) |
| 51-100 | 77 (45) |
| 101-200 | 49 (28) |
| N>200 | 18 (11) |
| Design | |
| Cross-sectional | 152 (88) |
| Longitudinal | 20 (12) |
| Population Type | |
| Case/Control | 157 (91) |
| Family history/No family history | 13 (8) |
| TD Only | 2 (1) |
| Region | |
| North America | 100 (58) |
| Asia | 43 (25) |
| Europe | 20 (12) |
| Europe, North America | 4 (2) |
| Asia, Europe | 1 (0.6) |
| Asia, North America | 1 (0.6) |
| Australia | 1 (0.6) |
| Europe, Middle East | 1 (0.6) |
| Middle East | 1 (0.6) |
| Modality | |
| fMRI | 41 (24) |
| EEG | 32 (18) |
| sMRI | 26 (15) |
| fNIRS | 20 (12) |
| MEG | 20 (12) |
| MRS | 19 (11) |
| DTI | 14 (8) |