Table 2. Weighted Logistic Regression Models for Ever-Diagnosed and Current Autism Spectrum Disorder (ASD) Among US Children.
| Characteristic | Ever-Diagnosed ASD | Current ASD | ||
|---|---|---|---|---|
| Odds Ratio (95% CI)a | P Value | Odds Ratio (95% CI)a | P Value | |
| Age, y | ||||
| 3-5 | 1 [Reference] | NA | 1 [Reference] | NA |
| 6-11 | 1.14 (0.72-1.80) | .57 | 1.34 (0.90-2.01) | .15 |
| 12-17 | 1.25 (0.80-1.94) | .32 | 1.40 (0.95-2.06) | .09 |
| Sex | ||||
| Male | 1 [Reference] | NA | 1 [Reference] | NA |
| Female | 0.26 (0.20-0.35) | <.001 | 0.27 (0.20-0.36) | <.001 |
| Race/ethnicity | ||||
| Non-Hispanic white | 1 [Reference] | NA | 1 [Reference] | NA |
| Hispanic | 0.75 (0.53-1.08) | .12 | 0.77 (0.53-1.11) | .16 |
| Non-Hispanic black | 0.93 (0.59-1.45) | .74 | 0.81 (0.56-1.17) | .26 |
| Non-Hispanic Asian | 0.48 (0.30-0.78) | .003 | 0.50 (0.30-0.82) | .006 |
| Other | 0.85 (0.60-1.18) | .33 | 0.85 (0.60-1.21) | .37 |
| Family income to poverty ratio | ||||
| <1.0 | 1 [Reference] | NA | 1 [Reference] | NA |
| 1.0-1.9 | 0.81 (0.52-1.24) | .33 | 0.66 (0.45-0.97) | .04 |
| 2.0-3.9 | 0.92 (0.66-1.28) | .63 | 0.90 (0.64-1.26) | .53 |
| ≥4.0 | 0.99 (0.68-1.44) | .95 | 0.94 (0.65-1.38) | .77 |
| Insurance type | ||||
| Private only | 1 [Reference] | NA | 1 [Reference] | NA |
| Public only | 2.37 (1.77-3.16) | <.001 | 2.47 (1.82-3.35) | <.001 |
| Private and public | 3.10 (2.17-4.43) | <.001 | 3.48 (2.41-5.03) | <.001 |
| Unspecified | 1.75 (0.66-4.66) | .26 | 1.63 (0.55-4.82) | .38 |
| Not insured | 0.52 (0.30-0.92) | .02 | 0.57 (0.31-1.02) | .06 |
Abbreviation: NA, not applicable.
a
Adjusted simultaneously for all other characteristic variables in the table as well as the state.