Table 4.

Dependent t-test and independent t-test for comparing pressure pain threshold values within and between groups

Dependent t-test within groups comparison
Variables PPT	Control group (A)				Experimental group (B)
	Frontal sinus		Maxillary sinus		Frontal sinus		Maxillary sinus
Right sinus
Pre	1.45±0.16		1.90±0.11		1.48±0.11		1.87±0.10
Post	2.06±0.16		2.57±0.10		3.07±0.17		3.21±0.15
p-value	<0.001*		<0.001*		<0.001*		<0.001*
Mean difference (%)	0.61±0.16 (42.06)		0.67±0.06 (35.26)		1.59±0.16 (107.43)		1.33±0.05 (71.65)
	Left sinus
Pre	1.43±0.14		1.86±0.06		1.44±0.08		1.84±0.07
Post	2.03±0.13		2.52±0.09		3.05±0.13		3.17±0.11
p-value	<0.001*		<0.001*		<0.001*		<0.001*
Mean difference (%)	0.60±0.14 (41.95)		0.66±0.09 (35.48)		1.60±0.14 (111.80)		1.32±0.08 (72.47)
	Independent t-test between groups comparison
Variables PPT		Pretest (control group vs. experimental group)		Posttest (control group vs. experimental group)		p-value of mean difference
Frontal sinus
Right		p=0.352		p<0.001*		<0.001*
Left		p=0.605		p<0.001*		<0.001*
Maxillary sinus
Right		p=0.243		p<0.001*		<0.001*
Left		p=0.287		p<0.001*		<0.001*

Values are presented as mean±standard deviation.

PPT, pressure pain threshold.

p>0.05 indicates no significance, *p<0.05 indicates significance.