The Nijmegen questionnaire is used to screen patients with dysfunctional breathing such as hyperventilation syndrome.
There are 16 items (related to symptoms of hyperventilation syndrome) to be answered on a 5-point scale ranging from ‘never’ (0) to ‘very often’ (4). A total score of more than 23 out of 64 points suggests significant hyperventilation.
- Nijmegen questionnaire Physiopedia, US
- van Dixhoorn J, Duivenvoorden HJ. Efficacy of Nijmegen Questionnaire in recognition of the hyperventilation syndrome. J Psychosom Res. 1985;29(2):199-206