표 1. | Table 1. 전문 음성사용자와 직업적 음성사용자의 주관적 음성증상 비교 | Comparison of Subjective voice symptoms in elite vocal performers and professional voice users

항목		증상 경험				χ2	p-value
		없음	가끔	종종	자주
Increase of pitch	PVU	8 (57.1%)	4 (28.6%)	2 (14.3%)	ND	1.511	.680
	EVP	7 (50.0%)	5 (35.7%)	1 (7.1%)	1 (7.1%)
Decrease of pitch	PVU	5 (35.7%)	6 (42.9%)	3 (21.4%)	ND	3.092	.378
	EVP	8 (57.1%)	4 (28.6%)	1 (7.1%)	1 (7.1%)
Difficulty of high pitch when singing	PVU	1 (7.1%)	5 (35.7%)	5 (35.7%)	3 (21.4%)	5.967	.113
	EVP	4 (28.6%)	3 (21.4%)	1 (7.1%)	6 (42.9%)
Difficulty of low pitch when singing	PVU	8 (57.1%)	4 (28.6%)	1 (7.1%)	1 (7.1%)	7.867*	.049
	EVP	2 (14.3%)	11 (78.6%)	ND	1 (7.1%)
Hoarse voice	PVU	ND	6 (42.9%)	6 (42.9%)	2 (14.3%)	9.733*	.021
	EVP	7 (50.0%)	4 (28.6%)	2 (14.3%)	1 (7.1%)
Breacking when spcaking	PVU	6 (42.9%)	6 (42.9%)	2 (14.3%)	ND	1.333	.513
	EVP	9 (64.3%)	4 (28.6%)	1 (7.1%)	ND
Roughness when speaking	PVU	1 (7.1%)	7 (50.0%)	5 (35.7%)	1 (7.1%)	5.190	.158
	EVP	6 (42.9%)	5 (35.7%)	2 (14.3%)	1 (7.1%)
Pain in the neck when speaking	PVU	ND	11 (78.6%)	3 (21.4%)	ND	9.474**	.009
	EVP	6 (42.9%)	8 (57.1%)	ND	ND
Hypertension when speaking	PVU	ND	4 (28.6%)	9 (64.3%)	1 (7.1%)	2.711	.438
	EVP	2 (14.3%)	5 (35.7%)	6 (42.9%)	1 (7.1%)
Difficulty (requiring effort) when speaking	PVU	1 (7.1%)	9 (64.3%)	4 (28.6%)	ND	6.900*	.032
	EVP	7 (50.0%)	6 (42.9%)	1 (7.1%)	ND
Feel voice fatigue	PVU	ND	1 (7.1%)	9 (64.3%)	4 (28.6%)	10.100*	.018
	EVP	1 (7.1%)	7 (50.0%)	6 (42.9%)	ND

PVU, professional voice user; EVP, elite vocal performer; ND, not detected.
p<.05,
p<.001.