Table 2.

Linear mixed-effect model: effect of age and masker on speech reception threshold

Fixed-Effect Terms	β Value	SE	df	t Ratio	P Value
Intercept (for SWN)	−6.3	1.62	52	−3.89	<0.001
Age	−0.162	0.0676	51	−2.39	0.02
Age2	0.0023	7.04e-04	51	3.28	0.002
Masker	−15.1	1.08	52	−14	<0.001
Age:masker	0.0689	0.0204	52	3.39	0.001

Regression coefficients (β values), standard errors (SE), degrees of freedom (df), t ratios, and P values per fixed-effect term. Age², age squared; SWN, speech-weighted noise. Colon indicates interaction.