In patients with chronic low back pain, the Fremantle Back Awareness Questionnaire (FreBAQ) measures the duration and intensity of pain and functional limitations. The FreBAQ is a simple tool created to assess disturbances in the body representation of the back, and the only one existing in chronic low back pain. It is a 9-item self-questionnaire in which each item is measured on a 5-point Likert scale ranging from "Never (score of 0)" to "Always (score of 4)". It assesses neglect, perceived body image of the back, accuracy in proprioceptive perception of back movements. The psychometric properties of the FreBAQ in English, Japanese, Dutch, Turkish and German are validated and acceptable; however, they have never been studied in French and no validated version of this questionnaire in French exists. The study investigators hypothesize that the French version of the FreBAQ has good psychometric qualities, allowing it to be used in the French chronic low back pain population.
Study Type
OBSERVATIONAL
Enrollment
150
Subjects will take the FreBAQ questionnaire at Day 0 and a subgroup of 35 controls and 15 patients will take the same questionnaire at Day 7
CHU de Nîmes
Nîmes, France
Pre-test of French version of FreBAQ on 20 representative patients
9-item self-administered questionnaire newly translated into French using a standard translation-retro-translation system, each item measured on a 5-point Likert scale ranging from "Never (score of 0)" to "Always (score of 4)
Time frame: Baseline
FreBAQ score
a 9-item self-administered questionnaire, each item measured on a 5-point Likert scale ranging from "Never (score of 0)" to "Always (score of 4)
Time frame: Day 0
FreBAQ score in a subgroup of 50 subjects (35 patients and 15 controls)
a 9-item self-administered questionnaire, each item measured on a 5-point Likert scale ranging from "Never (score of 0)" to "Always (score of 4)
Time frame: Day 7
Evaluation of the internal consistency of the French version of the FreBAQ
Analyzed by calculating Cronbach's alpha.
Time frame: Day 0
Evaluation of the unidimensionality of the French version of the FreBAQ
Analyzed using principal component analysis methods
Time frame: Day 0
Assessment of the reliability (test-retest) of the questionnaire in French
Measurement of the reliability of the questionnaire in French between the initial test and a test at Day 7: calculation of Bland \& Altman's limits of agreement,
Time frame: Day 7
Assessment of the reproducibility (test-retest) of the questionnaire in French
Measurement of the reproducibility of the questionnaire in French between the initial test and a test at Day 7: calculation of the intra-class correlation coefficient
Time frame: Day 7
Assessment of the discriminant validity of the questionnaire in French
Comparison of scores between control subjects and chronic low back pain patients by calculating the area under the ROC curve
Time frame: Day 0
Assessment of the concurrent validity
Correlation of the French questionnaire score with the duration of low back pain
Time frame: Day 0
Correlation of the French questionnaire score with lumbar visual analog scale (VAS) at rest
FreBAQ score compared with VAS result
Time frame: Day 0
Correlation of the French questionnaire score with lumbar VAS in movement
FreBAQ score compared with VAS result
Time frame: Day 0
Correlation of the French questionnaire score with disability
FreBAQ score compared with Oswestry Disability Index - a 10-section questionnaire with a results calculated as a percentage
Time frame: Day 0
Correlation of the French questionnaire score with false beliefs
FreBAQ score compared with back beliefs questionnaire - a 14-tem questionnaire on a 0-5 scale
Time frame: Day 0
Correlation of the French questionnaire score with fear avoidance beliefs
FreBAQ score compared with Fear Avoidance Belief Questionnaire - 16-item questionnaire scored between 0-6. Scale 1 = beliefs about work with a score ranging from 0 -42; Scale 2 = beliefs about physical activity with a score ranging from 0-24
Time frame: Day 0
Correlation of the French questionnaire score with kinesiophobia
FreBAQ score compared with Tampa scale of Kinesiophobia - total score 68, with a cut-off of 40 for significant kinesiophobia
Time frame: Day 0
Correlation of the French questionnaire score with catastrophism
FreBAQ score compared with Pain Catastrophizing Scale - a 13-item questionnaire on a 0-4 Likert scale
Time frame: Day 0
Correlation of the French questionnaire score with anxiety and depression
FreBAQ score compared with Hospital Anxiety and Depression Scale - a 14-item questionnaire on a 0-9 Likert scale
Time frame: Day 0
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