Table 5.

Pairwise comparisons.

Pair	% jitter	% shimmer	K2	D2	PTP	PTF	PTW
Sym. light/asym. light	0.195	0.390	0.071	1.000	0.054	0.546	0.592
Sym. light/no tension	0.328	0.392	0.227	0.955	<0.001	0.477	0.025
Sym. heavy/asym. heavy	0.612	0.489	0.047	0.264	0.969	0.885	1.000
Sym. heavy/no tension	0.677	0.900	0.313	0.879	0.005	0.167	0.038
Sym. heavy/sym. light	0.313	1.000	0.857	0.813	0.065	0.228	0.099
Asym. light/no tension	0.641	0.987	0.015	0.404	0.007	0.549	0.040
Asym. heavy/no tension	0.123	0.220	0.007	0.070	0.002	0.087	0.016
Asym. heavy/asym. light	0.528	0.193	0.659	0.635	0.003	0.487	0.175

P-values represent results of paired t-tests. Sym. = symmetrical tension; asym. = asymmetrical tension; K2 = second order entropy; D2 = correlation dimension; PTP = phonation threshold pressure; PTF = phonation threshold flow; PTW = phonation threshold power.