Aims\nTo test internal consistency and factor structure of a brief instrument called\nTrying to Quit smoking.\nBackground\nThe most effective treatment for patients with chronic obstructive pulmonary\ndisease is to quit smoking. Constant thoughts about quitting and repeated quit\nattempts can generate destructive feelings and make it more difficult to quit.\nDesign\nDevelopment and psychometric testing of the Trying to Quit smoking scale.\nMethods\nThe Trying to Quit smoking, an instrument designed to assess pressure-filled\nstates of mind and corresponding pressure-relief strategies, was tested among\n63 Swedish patients with chronic obstructive pulmonary disease. Among these,\nthe psychometric properties of the instrument were analysed by Exploratory\nFactor Analyses.\nResults\nFourteen items were included in the factor analyses, loading on three factors\nlabelled: (1) development of pressure-filled mental states; (2) use of destructive\npressure-relief strategies; and (3) ambivalent thoughts when trying to quit\nsmoking. These three factors accounted for more than 80% of the variance,\nperformed well on the Kaiser-Meyer-Olkin (KMO) test and had high internal\nconsistency.
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