Another way to score the visual analog scale is as a categorical variable where 50% improvement is
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Another way to score the visual analog scale is as a categorical variable where ≥50% improvement is considered a success and <50% improvement, remaining the same, or worsening is considered a failure. Answer the question posed in Problem 14.37 using the success/ failure scoring. Note that a patient may be a success at one visit but a failure at succeeding visits?
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