Table 3 Test–retest reliability of the SN-5 questionnaire at the 1st and 2nd visits

Q1

M (IQR)

3.12 ± 1.37

3(2–4)

3.18 ± 1.32

3(2–4)

0.977

< 0.00001**

Q2

M(IQR)

3.71 ± 1.30

4(3–5)

3.73 ± 1.26

4(3–5)

0.991

< 0.00001**

Q3

M(IQR)

3.34 ± 1.09

3(3–4)

3.36 ± 1.07

3(3–4))

0.986

< 0.00001**

Q4

M(IQR)

2.76 ± 1.17

3(2–3)

2.78 ± 1.15

3(2–3)

0.994

< 0.00001**

Q5

M(IQR)

2.17 ± 0.99

2(1–3)

2.23 ± 0.98

2(1–3)

0.971

< 0.00001**

Total score

M(IQR)

15.1 ± 3.97

15(12–18)

15.28 ± 3.85

15(13–18)

0.990

< 0.00001**

VAS

M(IQR)

5.38 ± 1.32

5(5–6)

5.46 ± 1.28

5(5–6)

0.979

< 0.00001**