Effect of a Vibration System on Pain Reduction during Injection of Dental Anesthesia in Children: A Randomized Clinical Trial

Table 1

Sample description.

Factors		Group A (test group)	Group B (control group)	value
Sex	Male: n (%)	12 (48.0)	10 (38.5)	0.49
	Female: n (%)	13 (52.0)	16 (61.5)
Age	Mean (SD)	8.16 (1.40)	7.83 (1.65)	0.44
Mother’s education	Less than high school: n (%)	6 (24)	5 (19.2)	0.25
	High school: n (%)	6 (24)	12 (46.2)
	University ad higher: n (%)	13 (52)	9 (34.6)
Father’s education	Less than high school: n (%)	11 (44)	14 (53.8)	0.59
	High school: n (%)	13 (52)	10 (38.5)
	University ad higher: n (%)	1 (4)	2 (7.6)

Mann–Whitney U-test used for age comparison; chi-square test used for all other comparisons.