표 3. | Table 3. 경직형과 불수의운동형 뇌성마비 아동의 F0, Jitter, Shimmer, NHR 결과 | F0, jitter, shimmer and NHR in children with spastic and dyskinetic cerebral palsy

	경직형 (n=17)	불수의운동형 (n=5)	t-value
F0 (Hz)	287.44 (77.29)	299.47 (67.10)	–.340
Jitter (%)	.70 (.52)	.80 (.30)	–.439
Shimmer (%)	4.35 (2.25)	6.95 (4.21)	–1.924*
NHR (dB)	.05 (.08)	.07 (.08)	–.207

p<.05.
NHR, noise to harmonic ratio.