Table 5.

Averaged and STD values of the lognormal parameters for young, middle, and older speakers with laryngeal pathologies (“To formant (sl)”)

Parameter	Young (40–30)	Middle (40–50)	Older (60–80)	p value Y vs M	p value Y vs O	p value M vs O
$\overline{\mathrm{\Delta }{t}_o}$	0.067 ± 0.007	0.069 ± 0.007	0.07 ± 0.007	0.02	< 0.001	1
NbLog	24 ± 6.2	39.31 ± 7.8	34 ± 9.4	< 0.001	< 0.001	< 0.001
$\overline{\mu }$	− 1.6 ± 0.17	− 1.59 ± 0.15	− 1.56 ± 0.14	1	< 0.001	0.007
SNR	18.27 ± 3.58	18.17 ± 3.46	17.55 ± 3.54	1	< 0.001	0.05