Table 2 Odds ratios (OR) and 95% confidence intervals (CI) from unadjusted and adjusted logistic regression analyses for risk of intellectual disability (ID) severity, and diagnostic categories among children with and without congenital heart defects (CHDs), Western Australia, Australia, 1983–2010
Severity of ID | Intellectual Disability (ID)a (n = 653) | Mild/ Moderate IDa (n = 595) | Severe IDa (n = 58) | ||||
Unadjusted OR (95% CI) | Adjusted OR (95% CI) | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | ||
Congenital Heart Defects (CHD)b | |||||||
No CHD | Referent | Referent | Referent | Referent | Referent | Referent | |
Any CHD | 5.66 (4.76, 6.72) | 5.26 (4.42, 6.26) | 5.11 (4.28, 6.10) | 4.76 (3.98, 5.70) | 30.65 (11.10, 84.65) | 24.66 (9.72, 62.57) | |
CHD Severityb | |||||||
No CHD | Referent | Referent | Referent | Referent | Referent | Referent | |
Mild CHD | 6.34 (4.41, 9.09) | 5.72 (3.97, 8.25) | 5.11 (3.44, 7.61) | 4.66 (3.12, 6.96) | 62.35 (18.71, 207.83) | 47.41 (15.48, 145.22) | |
Moderate CHD | 5.62 (4.70, 6.72) | 5.28 (4.40, 6.32) | 5.18 (4.31, 6.21) | 4.87 (4.05, 5.86) | 26.07 (9.29, 73.18) | 21.35 (8.30, 54.89) | |
Severe CHD | 4.98 (3.56, 7.00) | 4.47 (3.20, 6.25) | 4.52 (3.18, 6.42) | 4.07 (2.86, 5.78) | 25.86 (6.93, 96.53) | 22.08 (6.63, 73.58) | |
Diagnostic Categories | Autism with co-occurring IDa (n = 60) | Biomedical IDa (n = 215) | Unknown IDa (n = 378) | ||||
Unadjusted OR (95% CI) | Adjusted OR (95% CI) | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | ||
CHDb | |||||||
No CHD | Referent | Referent | Referent | Referent | Referent | Referent | |
Any CHD | 1.74 (1.04, 2.90) | 1.76 (1.07, 2.88) | 67.46 (31.75, 143.35) | 59.69 (28.99, 122.92) | 3.61 (2.93, 4.45) | 3.27 (2.65, 4.05) | |
CHD Severityb | |||||||
No CHD | Referent | Referent | Referent | Referent | Referent | Referent | |
Mild CHD | 2.75 (0.84, 8.99) | 3.23 (1.11, 9.38) | 75.71 (31.24, 183.49) | 65.41 (27.76, 154.14) | 3.84 (2.33, 6.33) | 3.45 (2.09, 5.70) | |
Moderate CHD | 1.58 (0.90, 2.76) | 1.61 (0.94, 2.76) | 64.83 (30.40, 138.26) | 57.81 (27.98, 119.47) | 3.73 (3.00, 4.63) | 3.43 (2.75, 4.27) | |
Severe CHD | 1.83 (0.56, 5.96) | 2.14 (0.74, 6.18) | 70.94 (30.46, 165.22) | 60.81 (26.92, 137.37) | 2.55 (1.55, 4.19) | 2.25 (1.38, 3.68) | |