Table 1: Acoustic analysis of gender-independent acoustic parameters.

Gender-independent parameters	Comparison of patient groups	Groups	N		SD	Minimum	Maximum	t	p
Jitter	allergies with nodules	allergies	20	0.2535	0.12959	0.12	0.57	1.497	0.143
		nodules	20	0.4860	0.68245	0.12	3.27
		total	40	0.3698	0.49894	0.12	3.27
	allergies with allergies and nodules	allergies	20	0.2535	0.12959	0.12	0.57	0.768	0.447
		allergies and nodules	20	0.2855	0.13399	0.15	0.62
		total	40	0.2695	0.13111	0.12	0.62
	nodules with allergies and nodules	nodules	20	0.4860	0.68245	0.12	3.27	1.289	0.205
		allergies and nodules	20	0.2855	0.13399	0.15	0.62
		total	40	0.3858	0.49594	0.12	3.27
Shimmer	allergies with nodules	allergies	20	27.940	246.453	0.34	9.70	0.162	0.872
		nodules	20	26.130	435.741	0.07	15.97
		total	40	27.035	349.536	0.07	15.97
	allergies with allergies and nodules	allergies	20	27.940	246.453	0.34	9.70	0.526	0.602
		allergies and nodules	20	23.630	271.254	0.11	8.73
		total	40	25.785	256.735	0.11	9.70
	nodules with allergies and nodules	nodules	20	26.130	435.741	0.07	15.97	0.218	0.829
		allergies and nodules	20	23.630	271.254	0.11	8.73
		total	40	24.880	358.479	0.07	15.97
NNE	allergies with nodules	allergies	20	-129.370	452.776	-19.26	-5.75	4.848	0.000
		nodules	20	-59.570	457.743	-14.00	5.77
		total	40	-94.470	571.732	-19.26	5.77
	allergies with allergies and nodules	allergies	20	-129.370	452.776	-19.26	-5.75	2.478	0.000
		allergies and nodules	20	-95.240	417.710	-16.99	-3.45
		total	40	-112.305	463.408	-19.26	-3.45
	nodules with allergies and nodules	nodules	20	-59.570	457.743	-14.00	5.77	2.574	0.014
		allergies and nodules	20	-95.240	417.710	-16.99	-3.45
		total	40	-77.405	468.729	-16.99	5.77
HNR	allergies with nodules	allergies	20	210.355	468.941	12.37	28.84	0.980	0.333
		nodules	20	195.258	492.738	11.17	27.04
		total	40	203.000	480.420	11.17	28.84
	allergies with allergies and nodules	allergies	20	210.355	468.941	12.37	28.84	0.980	0.333
		allergies and nodules	20	206.565	492.265	10.89	30.44
		total	40	208.460	474.929	10.89	30.44
	nodules with allergies and nodules	nodules	20	195.258	492.738	11.17	27.04	0.717	0.478
		allergies and nodules	20	206.565	492.265	10.89	30.44
		total	40	201.056	489.333	10.89	30.44