Table 6.

Models extracted from the possible explanatory variables (gender, multilingualism, hearing impairment, special support, school year, number of students in class, student placement in the classroom, and teacher placement in the classroom) using multiple linear regression analysis using forward stepwise regression (n = 149)

Factor	Model	Predictor(s)	R square	Regression coefficients			P
				Coefficient beta	S.E.	t
Ease of hearing	1.	School year	0.040	−0.201	0.064	−2.251	0.026
	2.	School year	0.077	−0.204	0.063	−2.322	0.022
		Gender		0.193	0.123	2.200	0.030
Annoyance	1.	Gender	0.072	0.269	0.156	3.061	0.003
Impact of noise	1.	Gender	0.032	0.178	0.163	1.980	0.050
Sounds coming from outside the classroom	1.	Number of students in class	0.062	−0.250	0.012	−2.851	0.005
	2.	Number of students in class	0.110	−0.228	0.012	−2.651	0.009
		Special support		0.219	0.094	2.546	0.012
	3.	Number of students in class	0.144	−0.228	0.012	−2.687	0.008
		Special support		0.189	0.094	2.200	0.030
		Student placement in class		−0.187	0.012	−2.185	0.031