Table S4.
Associations Between Autism Spectrum Disorder (ASD vs. No ASD), Autistic Trait Measures (High vs. Low ASD Risk Group), and Suicidal Thoughts (vs. No Suicidal Thoughts) and Plans (vs. No Suicidal Plans) at 16 Years in Imputed Sample (n = 5,093)
| Exposure/Risk Group (Age of Assessment) | Suicidal Thoughts |
Suicidal Plans |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unadjusted |
Adjusteda |
Unadjusted |
Adjusteda |
|||||||||
| RR | (95% CI) | p | RR | (95% CI) | p | RR | (95% CI) | p | RR | (95% CI) | p | |
| ASD diagnosis (diagnosed by 11 y) | 0.88 | (90.49, 1.57) | .664 | 1.06 | (0.60, 1.89) | .835 | 0.30 | (0.04, 2.14) | .232 | 0.37 | (0.05, 2.61) | .320 |
| Reduced social communication (91 mo) | 1.47 | (1.18, 1.82) | .001 | 1.45 | (1.17, 1.79) | .001 | 2.00 | (1.35, 2.97) | .001 | 1.92 | (1.28, 2.88) | .002 |
| Repetitive behavior (69 mo) | 1.25 | (0.94, 1.62) | .092 | 1.22 | (0.94, 1.58) | .135 | 1.69 | (1.06, 2.69) | .026 | 1.63 | (1.03, 2.58) | .035 |
| Reduced sociability (38 mo) | 1.03 | (0.83, 1.27) | .771 | 1.09 | (0.88, 1.34) | .424 | 0.78 | (0.48, 1.25) | .297 | 0.82 | (0.51, 1.32) | .411 |
| Reduced coherence (115 mo) | 1.06 | (0.84, 1.35) | .604 | 1.09 | (0.87, 1.38) | .441 | 1.64 | (1.09, 2.47) | .017 | 1.61 | (1.08, 2.41) | .019 |
Note: RR = relative risk.
Adjusted for child characteristics (sex and ethnicity), socioeconomic position (financial problems, maternal educational attainment, parental social class, and accommodation type), maternal characteristics and mental health (maternal age, antenatal anxiety, and antenatal and early postnatal depression), family history of suicide (parental suicide attempt); and early adverse experiences (childhood sexual abuse and physical cruelty to children in the household by mother/partner).