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Bronchial Hyperresponsiveness (BHQ)
The Bronchial Hyperresponsiveness Questionnaire (BHQ) aims to assess bronchial hyperresponsiveness in patients with asthma 1). It is implemented in the Lifelines cohort to assess bronchial hyperresponsiveness in the general population.
Background
BHQ is a 34-item condition-specific questionnaire including 15 questions on respiratory symptoms and 19 on provoking stimuli during the past three months. Each question is scored on a 7-point Likert scale ranging from no complaints (1) to severe complaints (7).
The questionnaire was originally developed in Dutch and was translated in English. It was developed based on a literature review (English), in-depth interviews (Dutch), and a focus group discussion (Dutch) with asthma patients. The questionnaire was based on the PC20-histamine test as the gold standard. Factor analysis was conducted to identify clusters of interrelated questionnaire items. Spearman rank correlation tests were performed to investigate the relation between PC20-histamine levels and the item results 2).
Variables
| Questions English | Questions Dutch | Variable | Assessment | Age |
| I make contact easily when I meet people. | Ik maak gemakkelijk contact met mensen | TYPED1 | 1C | 18+ |
| I often make a fuss about unimportant things. | Ik maak me dikwijls druk om onbelangrijke zaken | TYPED2 | 1C | 18+ |
| I often talk to strangers. | Ik maak vaak een praatje met onbekenden | TYPED3 | 1C | 18+ |
| I often feel unhappy. | Ik voel me vaak ongelukkig | TYPED4 | 1C | 18+ |
| I am often irritated. | Ik ben vaak geïrriteerd | TYPED5 | 1C | 18+ |
| I often feel inhibited in social interactions. | Ik voel me vaak geremd in de omgang met anderen | TYPED6 | 1C | 18+ |
| I often find myself worrying about something. | Ik maak mij dikwijls zorgen | TYPED7 | 1C | 18+ |
| I find it hard to start a conversation. | Ik vind het moeilijk om een gesprek te beginnen | TYPED8 | 1C | 18+ |
| I am often in a bad mood. | Ik ben vaak slecht gehumeurd | TYPED9 | 1C | 18+ |
| I am a closed kind of person. | Ik ben een gesloten persoon | TYPED10 | 1C | 18+ |
| I would rather keep people at a distance. | Ik houd andere mensen liefst wat op een afstand | TYPED11 | 1C | 18+ |
| I take a gloomy view of things. | Ik zie de zaken somber in | TYPED12 | 1C | 18+ |
| I am often down in the dumps. | Ik zit vaak in de put | TYPED13 | 1C | 18+ |
| When socializing, I don't find the right things to talk about. | Ik weet niet waarover ik moet praten met anderen | TYPED14 | 1C | 65+ |
| I have little control over the things that happen to me. | Ik heb weinig controle over de dingen die me overkomen | TYPED15 | 1C | 65+ |
| I cannot possibly solve some of my problems. | Sommige van mijn problemen kan ik met geen mogelijkheid oplossen | TYPED16 | 1C | 65+ |
| There is little that I can do to change important things in my life. | Er is weinig dat ik kan doen om belangrijke dingen in mijn leven te veranderen | TYPED17 | 1C | 18+ |
| I often feel helpless in dealing with the problems of life. | Ik voel me vaak hulpeloos bij het omgaan met de problemen van het leven | TYPED18 | 1C | 18+ |
| Sometimes I feel that I am a plaything of life. | Soms voel ik dat ik een speelbal van het leven ben | TYPED19 | 1C | 18+ |
| What happens to me in the future, mostly depends on myself. | Wat er in de toekomst met me gebeurt, hangt voor het grootste deel van mezelf af | TYPED20 | 1C | 18+ |
| I can do just about anything if I have put my mind to it. | Ik kan ongeveer alles als ik mijn zinnen erop gezet heb. | TYPED21 | 1C | 18+ |
