Table 3.
Percentage of children in the ASD and non-ASD groups that failed each item on the M-CHAT
| Topic of M-CHAT item | ASD n = 173 | Non-ASD n = 51 853 | P-value | LR |
|---|---|---|---|---|
| 1. Enjoy being swung/bounced | 2.3 | 0.6 | 0.026 | 3.6 |
| 2. Interest in other children* | 5.2 | 0.4 | <0.001 | 14.6 |
| 3. Enjoy climbing | 6.9 | 0.8 | <0.001 | 8.7 |
| 4. Enjoy peek-a-boo | 2.3 | 0.6 | 0.018 | 4.1 |
| 5. Pretend play | 16.2 | 1.9 | <0.001 | 8.3 |
| 6. Point to ask | 21.4 | 3.8 | <0.001 | 5.7 |
| 7. Point for interest* | 22.0 | 3.3 | <0.001 | 6.7 |
| 8. Functional play | 9.2 | 1.1 | <0.001 | 8.8 |
| 9. Show objects to others* | 14.5 | 1.3 | <0.001 | 11.0 |
| 10. Eye contact | 6.4 | 2.0 | 0.001 | 3.1 |
| 11. Oversensitive to noise | 11.6 | 12.4 | 0.807 | 0.9 |
| 12. Response to smile | 1.2 | 0.2 | 0.037 | 6.7 |
| 13. Imitation* | 19.1 | 6.1 | <0.001 | 3.1 |
| 14. Response to name* | 5.2 | 0.4 | <0.001 | 11.6 |
| 15. Follow point* | 22.5 | 3.5 | <0.001 | 6.5 |
| 16. Walk | 17.9 | 2.4 | <0.001 | 7.5 |
| 17. Follow gaze | 11.6 | 2.0 | <0.001 | 5.9 |
| 18. Unusual finger movements | 14.5 | 7.8 | 0.003 | 1.8 |
| 19. Attract attention to activity | 12.7 | 3.1 | <0.001 | 4.1 |
| 20. Appear deaf | 4.6 | 1.3 | 0.002 | 3.5 |
| 21. Understand what others say | 9.8 | 1.1 | <0.001 | 8.9 |
| 22. Stare at nothing | 24.9 | 13.4 | <0.001 | 1.9 |
| 23. Check parent's reaction | 15.0 | 10.8 | 0.080 | 1.4 |
*
The six critical items