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Freezing of Gait Questionnaire: validity and reliability of the Swedish version.

Nilsson, Maria H LU and Hagell, Peter LU (2009) In Acta Neurologica Scandinavica 120(5). p.331-334
Abstract
Background - Patient-reported assessments of freezing of gait (FOG) in Parkinson's disease (PD), such as the FOG questionnaire (FOGQ), are needed because FOG is difficult to assess objectively. However, the measurement properties of the FOGQ have been sparsely assessed. Aim - To assess the measurement properties of the Swedish FOGQ, and to explore relationships between FOGQ scores and other aspects of PD. Methods - Thirty-seven people with PD were assessed with the FOGQ, Unified PD Rating Scale (UPDRS), Hoehn and Yahr (HY), Falls-Efficacy Scale [FES(S)], timed gait tests, and the SF-36 physical functioning (PF) scale. Results - Mean (SD) FOGQ item scores ranged between 1.3 and 2.1 (1.2-1.5); corrected item-total correlations ranged between... (More)
Background - Patient-reported assessments of freezing of gait (FOG) in Parkinson's disease (PD), such as the FOG questionnaire (FOGQ), are needed because FOG is difficult to assess objectively. However, the measurement properties of the FOGQ have been sparsely assessed. Aim - To assess the measurement properties of the Swedish FOGQ, and to explore relationships between FOGQ scores and other aspects of PD. Methods - Thirty-seven people with PD were assessed with the FOGQ, Unified PD Rating Scale (UPDRS), Hoehn and Yahr (HY), Falls-Efficacy Scale [FES(S)], timed gait tests, and the SF-36 physical functioning (PF) scale. Results - Mean (SD) FOGQ item scores ranged between 1.3 and 2.1 (1.2-1.5); corrected item-total correlations ranged between 0.80 and 0.94. Reliability was 0.95. Mean (SD) and median (q1-q3) FOGQ scores were 9.6 (7.4) and 10 (2-15). Floor and ceiling effects were </=5.4%. FOGQ correlated strongest with UPDRS part II (ADL), UPDRS item 14 (freezing), and HY (r(S) 0.65-0.66). FOGQ scores correlated with PD duration, the Timed Up and Go test, dyskinesia, motor fluctuations, FES(S), and PF scores (r(S) 0.40-0.62). Fallers had higher FOGQ scores than non-fallers (median 12.5 vs 5.0). Conclusion - Data support the measurement properties of the Swedish FOGQ by replicating and extending previous psychometric reports. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Acta Neurologica Scandinavica
volume
120
issue
5
pages
331 - 334
publisher
Wiley-Blackwell
external identifiers
  • wos:000270639000009
  • pmid:19456303
  • scopus:70349976441
ISSN
1600-0404
DOI
10.1111/j.1600-0404.2009.01175.x
language
English
LU publication?
yes
id
45b27a4e-849d-4555-9db2-d9f084bb20e8 (old id 1412107)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19456303?dopt=Abstract
date added to LUP
2009-06-03 15:17:30
date last changed
2017-01-01 07:47:22
@article{45b27a4e-849d-4555-9db2-d9f084bb20e8,
  abstract     = {Background - Patient-reported assessments of freezing of gait (FOG) in Parkinson's disease (PD), such as the FOG questionnaire (FOGQ), are needed because FOG is difficult to assess objectively. However, the measurement properties of the FOGQ have been sparsely assessed. Aim - To assess the measurement properties of the Swedish FOGQ, and to explore relationships between FOGQ scores and other aspects of PD. Methods - Thirty-seven people with PD were assessed with the FOGQ, Unified PD Rating Scale (UPDRS), Hoehn and Yahr (HY), Falls-Efficacy Scale [FES(S)], timed gait tests, and the SF-36 physical functioning (PF) scale. Results - Mean (SD) FOGQ item scores ranged between 1.3 and 2.1 (1.2-1.5); corrected item-total correlations ranged between 0.80 and 0.94. Reliability was 0.95. Mean (SD) and median (q1-q3) FOGQ scores were 9.6 (7.4) and 10 (2-15). Floor and ceiling effects were &lt;/=5.4%. FOGQ correlated strongest with UPDRS part II (ADL), UPDRS item 14 (freezing), and HY (r(S) 0.65-0.66). FOGQ scores correlated with PD duration, the Timed Up and Go test, dyskinesia, motor fluctuations, FES(S), and PF scores (r(S) 0.40-0.62). Fallers had higher FOGQ scores than non-fallers (median 12.5 vs 5.0). Conclusion - Data support the measurement properties of the Swedish FOGQ by replicating and extending previous psychometric reports.},
  author       = {Nilsson, Maria H and Hagell, Peter},
  issn         = {1600-0404},
  language     = {eng},
  number       = {5},
  pages        = {331--334},
  publisher    = {Wiley-Blackwell},
  series       = {Acta Neurologica Scandinavica},
  title        = {Freezing of Gait Questionnaire: validity and reliability of the Swedish version.},
  url          = {http://dx.doi.org/10.1111/j.1600-0404.2009.01175.x},
  volume       = {120},
  year         = {2009},
}