Table 7 Median, minimum, maximum values and result of Kruskal–Wallis test for comparison of the pain intensity after starting canine retraction in the two groups.

From: Effectiveness of low frequency vibration on the rate of canine retraction: a randomized controlled clinical trial

Timing

 

Intervention

Control

P-Value

At same day

Median

4

5

0.721

Min

0

0

Max

10

8

24 h

Median

4

5

0.882

Min

0

1

Max

10

8

72 h

Median

2

3

0.378

Min

0

1

Max

8

5

7 days

Median

0

0

0.964

Min

0

0

Max

4

2