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Spanish version of behavior questionnaire for fibromyalgia patients found reliable
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A Spanish version of the Sedentary Behavior Questionnaire displayed good reliability and poor convergent validity compared with a body monitoring device for patients with fibromyalgia, according to study results.
Researchers in Spain translated the Sedentary Behavior Questionnaire (SBQ-S) and pretested it after cross-cultural adaptation standards. One hundred fourteen patients with fibromyalgia (median age, 52 years; 95% women) evaluated the test-retest reliability. A subset of 51 patients included in a convergent validity analysis wore a body monitoring device (SWA) for 9 consecutive days and completed the SBQ-S twice with a 1-week interval.
SBQ-S scores showed good overall reliability, according to the researchers, and intraclass correlation coefficients were described as excellent for the total scores (0.83 to 0.86). They varied from moderate to excellent for 10 of the 11 sedentary behaviors (0.52 to 0.96), with only time playing a musical instrument (0.07) rated as poor.
SBQ-S and the SWA displayed no significant association for weekday, weekend and total sedentary time (r from –0.06 to –0.03; P>.05). When compared with the SWA method, the SBQ-S slightly underestimated weekday and total sedentary time (2%) and slightly overestimated weekend sedentary time (1%). As daily sedentary hours increased, SBQ-S and SWA measurements displayed a significant association between the difference and magnitude for weekday, weekend and total sedentary time (beta coefficients, –0.713, –0.330 and –0.629; P>.001, P=.018 and P>.001, respectively).
“This is the first study to address the test-retest reliability and convergent validity of a self-administered instrument for assessing sedentary behavior in fibromyalgia patients, and the first study to adapt the English version of the Sedentary Behavior Questionnaire into Spanish,” the researchers wrote. Results “showed that SBQ-S … presents a good reliability for weekend, weekday and total sedentary time, as well as poor convergent validity when compared with the SWA in Spanish fibromyalgia patients studied. The questionnaire is quick and easy to administer and interpret.”
Disclosure: The researchers report no relevant financial disclosures.
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