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. 2020 Aug;40(4):262–269. doi: 10.14639/0392-100X-N0555

Table II.

Comparison of GRBAS parameters for study group (n = 16) and control group (n = 22).

	Grade
	Normal voice (0)	Mild (1)	Moderate (2)	Severe (3)
Study group	5 (31%)	11 (69%)	0	0	χ² = 1.27; p = 0.530
Control group	9 (41%)	12 (54.5%)	1 (4.5%)	0	χ² = 1.27; p = 0.530
	Roughness
	Normal voice (0)	Mild (1)	Moderate (2)	Severe (3)
Study group	0	6 (37.5%)	8 (50%)	2 (12.5%)	χ² = 2.65; p = 0.449
Control group	1(5%)	4 (18%)	15 (68%)	2 (9%)	χ² = 2.65; p = 0.449
	Breathiness
	Normal voice (0)	Mild (1)	Moderate (2)	Severe (3)
Study group	4 (25%)	10 (62.5%)	2 (12.5%)	0	χ² = 0.17; p = 0.919
Control group	5 (23%)	15 (68%)	2 (9%)	0	χ² = 0.17; p = 0.919
	Asthenia
	Normal voice (0)	Mild (1)	Moderate (2)	Severe (3)
Study group	7 (44%)	9 (56%)	0	0	χ² = 0.21; p = 0.646
Control group	8 (36%)	14 (64%)	0	0	χ² = 0.21; p = 0.646
	Strain
	Normal voice (0)	Mild (1)	Moderate (2)	Severe (3)
Study group	2 (12%)	11 (69 %)	3 (19 %)	0	χ² = 1.60; p = 0.660
Control group	2 (9%)	14 (64%)	4 (18%)	2 (9%)	χ² = 1.60; p = 0.660