Table 2

 Risk of admission to hospital up to 5 years of age for neonatal survivors among cohort of children born in WA 1983–92 by principal diagnosis and ID status

Clinically relevant categoryIntellectual disability associated with ASD (n = 191)Medically diagnosed intellectual disability (n = 604)Severe intellectual disability (n = 223)Mild or moderate intellectual disability (n = 2111)Intellectual disability unspecified (n = 393)No intellectual disability (n = 238317)
No. of children admittedRelative risk (95% CI)No. of children admittedRelative risk (95% CI)No. of children admittedRelative risk (95% CI)No. of children admittedRelative risk (95% CI)No. of children admittedRelative risk (95% CI)No. of children admittedReference group
Each child can be in more than one category.
na, less than five children.
All categories1241.3 (1.2–1.5)5692.0 (1.9–2.0)1921.8 (1.7–1.9)15861.6 (1.5–1.6)3171.7 (1.6–1.8)1148191.0
Infections611.4 (1.2–1.7)4173.1 (2.91–3.2)1272.5 (2.3–2.8)9982.1 (2.0–2.2)1852.1 (1.9–2.3)538021.0
Respiratory121.0 (0.6–1.7)1323.4 (2.9–4.0)574.0 (3.2–5.0)3102.3 (2.1–2.6)612.4 (1.9–3.1)152261.0
Gastrointestinal tract282.0 (1.4–2.8)1884.3 (3.8–4.8)945.8 (4.9–6.7)4422.9 (2.6–3.1)883.1 (2.5–3.7)174531.0
Central nervous system816.0 (8.1–31.6)9861.9 (50.8–75.4)62106.0 (84.6–132.8)10218.4 (15.0–22.6)3634.9 (25.3–48.2)6251.0
Mental1528.2 (17.2–46.1)1810.7 (6.7–17.0)1016.1 (8.7–29.6)396.6 (4.8–9.1)1311.9 (6.9–20.4)6641.0
Congenital abnormalities253.7 (2.6–5.4)31314.7 (13.6–15.9)546.9 (5.4–8.7)2503.4 (3.0–3.8)604.3 (3.4–5.5)84011.0
Oral cavity71.4 (0.7–3.0)533.4 (2.7–4.5)173.0 (1.9–4.7)1112.1 (1.7–2.5)272.7 (1.9–3.9)60791.0
Perinatal period291.4 (1.0–2.0)1342.1 (1.8–2.4)743.1 (2.6–3.7)4371.9 (1.8–2.1)1072.5 (2.1–3.0)257191.0
Injury and poisoning201.3 (0.9–2.0)1202.5 (2.1–2.9)462.6 (2.0–3.4)3552.1 (1.9–2.3)591.9 (1.5–2.4)188831.0
Social admissionsna0.5 (0.2–1.4)662.7 (2.2–3.4)242.7 (1.8–3.9)1531.8 (1.6–2.1)301.9 (1.3–2.7)95281.0
Renal/genital81.2 (0.6–2.4)271.3 (0.9–1.9)121.6 (0.9–2.7)1111.5 (1.3–1.8)191.4 (0.9–2.2)81841.0
Neoplasmna1.3 (0.2–8.8)187.1 (4.5–11.2)na80.9 (0.5–1.8)na1.2 (0.3–4.8)10021.0
Other242.1 (1.4–3.0)2486.8 (6.2–7.5)745.5 (4.6–6.7)3753.0 (2.7–3.3)803.4 (2.8–4.1)143121.0