... the impact of FM on participants' sleep and to evaluate the content validity of both of these measures in the FM patient population Methods Participants Eligible patients were between the ages of ... related to the content, wording, and comprehension of the item Participants were then asked to provide other feedback on the measures, such as their relevance to FM, and offer suggestions for improvement ... important and similar to the type of information they provided to their physicians about the consequences of their nocturnal FM pain These findings, along with the brevity, ease of use, and daily...