Despite increasing clinical and research use of the Tampa Scale of Kinesiophobia 11-item version (TSK-11) in people with neck pain, little is known about its measurement properties in this population.
To rigorously evaluate the measurement properties of the TSK-11 when used in people with mechanical neck pain.
Secondary analysis of two independent databases (N = 235) of people with mechanical neck pain of primarily traumatic origin.
The 11-item version of the Tampa Scale for Kinesiophobia (TSK-11) was subjected to Rasch analysis and subsequent evaluation of concurrent associations with the Neck Disability Index and a pain intensity Numeric Rating Scale.
The TSK-11 conformed well to the Rasch model for interval level measurement, but less so for acute or non-traumatic etiologies. A transformation matrix suggested that small changes at the extremes of the scale are more meaningful than in the middle. Cross-sectional convergent validity testing suggested relationships of expected magnitude and direction when compared to pain intensity and neck-related disability. The use of the linearly-transformed TSK- 11 led to potentially important differences in distribution of data when compared to use of the raw scores.
The sample size is slightly smaller than desired for Rasch analysis. The two databases were similar in terms of symptom duration, but differed in pain intensity and age.
The TSK-11 can be considered an interval-level measure when used in people with neck pain. It provides potentially important information regarding the nature of neck-related disability. Clinically important difference may not be consistent across the range of the scale.
Source: http://ptjournal.apta.org/cgi/content/short/ptj.20120255v1?rss=1
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