Open AccessThe Orthostatic Hypotension Questionnaire in Swedish tested in patients with parkinsonism
Author(s) -
Olsson Andreas,
Olsson Mia,
Fedorowski Artur,
Hagell Peter,
Wictorin Klas
Publication year - 2020
Publication title -
brain and behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 41
ISSN - 2162-3279
DOI - 10.1002/brb3.1746
Subject(s) - orthostatic vital signs , parkinsonism , medicine , construct validity , reliability (semiconductor) , physical therapy , psychometrics , blood pressure , disease , clinical psychology , power (physics) , physics , quantum mechanics
Background Orthostatic hypotension (OH) is common among older people and in particular in conditions like Parkinson’s disease (PD). The OH Questionnaire (OHQ) has been proposed as a useful patient‐reported assessment tool consisting of the OH Symptom Assessment (OHSA), OH Daily Activity Scale (OHDAS), and a composite score. Aims of the Study To translate the OHQ into Swedish and assess its psychometric properties. Methods Following forward–backward translation, the Swedish OHQ was field‐tested ( n = 6) for relevance, comprehensibility, and respondent burden. It was then tested regarding scaling assumptions, targeting, reliability, and construct validity in persons with PD ( n = 27) and multiple system atrophy ( n = 2). Results The Swedish OHQ was considered relevant and easy to use, with a mean completion time of 5.3 min. Scaling assumptions were acceptable for OHSA and OHDAS (corrected item‐total correlations, .30–.67) but not for the total score (.12–.69). Floor/ceiling effects were ≤3.4% and reliability was >.64. Construct validity was supported by expected correlations with the SCOPA‐AUT, RAND‐36, and blood pressure measurements. Conclusions The Swedish OHQ was well received, and psychometric results suggest that the OHQ (particularly the OHDAS) is a useful tool for OH assessment in parkinsonian disorders. Further testing in larger samples is needed.