Table 8.

Multiple regression analysis of global outcomes factor scores with respect to predictors. The probability level (p) for each predictor refers to the multiple degree of freedom (df) test of all terms relating to that predictor. The estimated effect size and 95% confidence interval (CInt) for significant predictors are italicized.

Predictor		df	p	Effect	CInt
Additional disability (reference: absent)		1	< 0.001
	Present			−10.4	(−14.4, −6.3)
Gender (reference: male)		1	0.01
	Female			4.0	(0.8, 7.2)
Maternal education (reference: ≤12 years school)		2	0.01
	University			6.3	(2.1, 10.6)
	Diploma			4.2	(−0.1, 8.4)
4FA HL		3	0.02
	HA group, from 38.8 to 61.3 dB HL			−4.5a	(−7.9, −1.0)
	CI group, from 85.0 to 110.0 dB HL			0.1a	(−4.5, 4.8)
Age at switch-on of first cochlear implant		2	0.04
	From 9.8 to 23.5 months			−8.1a	(−14.5, −1.8)
Age at fitting of first hearing aids		3	0.59
	From 2.4 to 11.0 months, HA group			−2.4a	(−5.8, 1.1)
	CI group			−0.1a	(−6.1, 6.0)
Birthweight		2	0.05
	From 2.6 to 3.6 kg			2.3a	(−0.2, 4.8)
Auditory neuropathy (reference: absent)		1	0.73
	Present			1.0	(−4.7, 6.8)
Device (reference: HA)		3	0.73
	CI			−15.7	(−50.6, 19.2)
Hearing aid prescription (reference: NAL)		1	0.53
	DSL			1.0	(−2.1, 4.2)
Communication mode at home (reference: other)		1	0.26
	Oral only			3.0	(−2.2, 8.1)
Language at home (reference: other)		1	0.14
	Spoken English			6.0	(−2.1, 14.1)
Socio-economic status		1	0.05
	IRSAD, from 968.9 to 1075.0			2.4a	(0.04, 4.8)
Communication mode during educational intervention (reference: no intervention)		2	0.05
	Oral only			4.5	(−5.4, 14.4)
	Other			−1.8	(−12.4, 8.9)
Communication mode change in intervention (reference: no change)		2	0.28
	Oral to other			−1.1	(−9.2, 7.0)
	Other to oral only			−5.3	(−12.0, 1.4)

^achange in the mean of the dependent variable associated with a change in the predictor from the value at the 25^th percentile to 75^th percentile. These predictors are continuous variables.