Common and specific impairments in attention functioning in girls with chromosome 22q11.2 deletion, fragile X or Turner syndromes

Table 3 Diagnosis and age as predictors of attentional indices

Linear model estimates of fixed effects on log-transformed (index)
Index	Coefficient	Estimate ( β)^a	Standard error	P	Description
Alerting
	Intercept	7.300	0.0234	<0.001
	22q11.2DS	0.0225	0.0268	0.40	No cost to those with 22q11.2DS
	FXS	0.0234	0.0295	0.43	No cost to those with FXS
	TS	0.0067	0.0271	0.80	No cost to those with TS
	Age (months)	0.00009	0.0004	0.82	No benefit of age
Orienting
	Intercept	7.372	0.034	<0.001
	22q11.2DS	0.007	0.0392	0.86	No cost to those with 22q11.2DS
	FXS	0.0234	−0.093	0.03	No cost to those with FXS
	TS	0.0067	−0.033	0.41	No cost to those with TS
	Age (months)	0.00041	0.0006	0.47	No benefit of age
Executive
	Intercept	7.379	0.034	<0.001
	22q11.2DS	0.039	0.0307	0.21	No cost to those with 22q11.2DS
	FXS	0.0234	0.0334	0.002	11.3% cost to those with FXS
	TS	0.0067	0.0307	0.02	7.5% cost to those with TS
	Age (months)	−0.00076	0.0004	0.09	No benefit of age

^aSome parameters were set to 0 as reference for modeling: for the diagnosis category, the typically developing group, and for age, 83 months. 22q11.2DS, chromosome 22q11.2 deletion syndrome; FXS, fragile X syndrome; TS, Turner syndrome.

ISSN: 1866-1955