(302) Prediction of Experimental Pain Outcomes by Subjective and Objective Measures of Sleep in Temporomandibular Joint Disorder

Abstract

Interrelationships among pain and poor sleep are well established. However, discrepancies between subjective (self-report) and objective (actigraphy) measures of sleep are commonly observed. The current study tested if pain intensity and situational pain catastrophizing after experiencing experimentally-induced pain were differentially predicted by subjective or objective measures of sleep in patients with chronic temporomandibular disorder (TMJD) or healthy controls (HCs). Forty patients with TMJD and 20 HCs were brought into the lab for two visits approximately one week apart. At visit one, they completed subjective self-report measures of sleep (Pittsburgh Sleep Quality Inventory [PSQI], Insomnia Severity Index [ISI]). On visit two, they completed additional self-report measures (PROMIS sleep-related impairment, sleep disruption, and fatigue) and underwent a cold-pressor task (CPT) consisting of four repeated immersions over a 6-minute period. They rated pain intensity during the task. Next, participants completed a situational pain catastrophizing measure. Between visits, participants wore an actigraphy watch (Actiwatch II, Philips Respironics) for seven days from which the following sleep-derived variables were averaged: latency, total sleep time, efficiency, and wake after sleep onset (WASO). Results revealed that people with TMJD had worse subjective sleep than HCs (all p’s