Figure 3

The interaction effect in the reported worst pain level in the past 24 h on the numeric pain rating scale between pain and twitching. For participants who reported pain, their Worst Pain Level in the past 24 h was higher if they did not have twitching responses (7.29 ± 1.19), while it was lower if they had twitching responses (5.97 ± 0.46). Conversely, for those who did not report pain, their Worst Pain Level in the past 24 h was lower if they did not have twitching responses (2.03 ± 0.77) and higher if they had twitching responses (4.54 ± 0.78). There was a significant difference in the current pain level between pain and no pain participants when they had no twitching responses, p = .04.