Table 3 Hyposalivation and oral dryness questionnaire in study group (with NF1)

1. Do you fell dry oral mucosa sensation?

9 (18)

1.8 (0.4 – 7.3)

0.51

2. Do you feel dry lips sensation?

10 (20)

0.8 (0.2 – 2.6)

0.76

3. Do you have difficult to swallow dry food?

6 (12)

1.5 (0.3 – 7)

0.71

4. Do you drink liquids to aid swallowing dry food?

14 (28)

1.8 (0.5 – 6.1)

0.37

5. Do you feel change in saliva viscosity?

11 (22)

1.9 (0.5 – 6.9)

0.36

6. Do you feel a decreased amount of saliva in your mouth?

8 (16)

0.9 (0.2 – 3.2)

0.88

7. Do you feel enough or increased amount of saliva in your mouth?

3 (6)

0.4 (0.09 – 2)

0.42