Table 5

Number of diagnostic categories experienced by children up to 5 years of age for neonatal survivors among cohort of children born in WA 1983–92 by ID status

No. of diagnosis categories at admission	Intellectual disability associated with ASD		Medically diagnosed intellectual disability		Severe intellectual disability		Mild or moderate intellectual disability		Intellectual disability unspecified		No intellectual disability
No. of diagnosis categories at admission	No. of children	% of cohort	No. of children	% of cohort	No. of children	% of cohort	No. of children	% of cohort	No. of children	% of cohort	No. of children	% of cohort
p<0.05; *p<0.001 comparing ID affected children admitted at least once with children free of intellectual disability and never admitted to hospital.
Never admitted	67	35.1	35	5.8	31	13.9	525	24.9	76	19.3	123498	51.8
Admitted at least once	124	64.9**	569	94.2**	192	86.1**	1586	75.1**	317	80.7**	114819	48.2
1	60	31.4	87	14.4	36	16.1	591	28.0	114	29.0	71842	30.1
2	31	16.2	128	21.2	33	14.8	422	20.0	88	22.4	28083	11.8
3	19	9.9	134	22.2	44	19.7	258	12.2	50	12.7	9933	4.2
4+	14	7.3	220	36.4	79	35.4	315	14.9	65	16.5	4961	2.1
Total	191	100.0	604	100.0	223	100.0	2111	100.0	393	100.0	238317	100.0