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Table 3 Descriptive statistics study of the difficulty in swallowing and jaw movement limitation reported by the patients as well as Friedman’s Test to show any significance between the four time points

From: Does the application of autologous injectable Platelet-Rich Fibrin (i-PRF) affect the patient’s daily performance during the retraction of upper canines? A single-centre randomized split-mouth controlled trial

Variable

Time

Mean

SD

Min

Max

Median (IQR)

P-Value

Difficulty in Swallowing

T1

1.90

6.01

0.00

20.00

0 (0.00)

0.112

T2

0.72

2.43

0.00

10.24

0 (0.00)

T3

0.00

0.00

0.00

0.00

0 (0.00)

T4

0.00

0.00

0.00

0.00

0 (0.00)

Jaw Movement Limitation

T1

2.38

7.68

0.00

30.00

0 (0.00)

0.112

T2

1.45

4.82

0.00

20.00

0 (0.00)

T3

0.00

0.00

0.00

0.00

0 (0.00)

T4

0.00

0.00

0.00

0.00

0 (0.00)

  1. T1 is 1 h after the injection; T2 is 2 h after the injection; T3 is 6 h after the injection; T4 is 24 h after the injection
  2. Friedman’s Test