This study explored the significance of anxiety and depression in
quality of life, functional disability and lifestyle among
fibromyalgia patients. Functional disability was defined by
subjective work ability and activity-related discomfort.
Lifestyle reflected habits of physical activity, regularity of
meals, smoking and patterns of drinking coffee and alcohol.
Members of two county divisions of fibromyalgia patients (N =
322) were investigated. Owing to colinearity between anxiety
and depression scores, extreme groups were defined according
to high vs. low anxiety and depression scores. Two-thirds of
the initial sample were excluded by this approach which
permitted a 2 x 2 factorial split-plot MANCOVA for the
assessment of main effects and interaction of anxiety and
depression upon quality of life, functional disability and
lifestyle. Main effects of anxiety and depression were
significant for index scores on activity-related discomforts,
subjective work ability and quality of life, whereas
depression was also significantly associated with regularity
of meals. Anxiety and depression interacted to yield
relatively high consumption of coffee and cigarettes among the
anxious and depressed subgroup, and this effect emerged only
after the elimination of confounding effects of age and
duration of the fibromyalgia disease.
Kurtze N, Gundersen KT, Svebak S