TABLE 2.

Questionnaire scales and subscales scores.

	FMS group	RD group	HC group
	n = 48	n = 41	n = 38
	Median (interquartile range)			P-value
Alexithymia-TAS-20
DIF	22.00 (14.75–26.00)	17.00 (14.00–23.00)	11.00 (7.50–14.00)	< 0.0001
DDF	16.50 (10.75–19.00)	15.00 (12.00–17.00)	11.00 (8.00–14.75)	0.001
EOT	19.00 (15.75–22.00)	20.00 (16.00–22.00)	16.00 (14.00–18.00)	0.003
TAS	60.00 (46.75–68.00)	56.00 (47.00–64.00)	40.50 (32.25–48.00)	< 0.0001
Pain-QIUD
QUID-S	0.33 (0.23–0.42)	0.30 (0.12–0.39)	0.03 (0.00–0.14)	< 0.0001
QUID-A	0.40 (0.27–0.53)	0.20 (0.07–0.40)	0.00 (0.00–0.18)	< 0.0001
VAS	7.00 (4.75–8.00)	5.00 (4.00–7.00)	1.00 (0.00–4.00)	< 0.0001
Psychological distress
HADS-A	9.00 (6.00–13.00)	7.00 (4.00–11.00)	4.00 (2.00–5.00)	< 0.0001
HADS-D	9.00 (6.75–11)	8.00 (5.00–10.00)	3.00 (1.00–5.75)	< 0.0001

TAS-20; Toronto Alexithymia Scale-20 Item Version, DIF; Difficulty Identifying Feelings, DDF; Difficulty Describing Feelings, EOT; Externally-Oriented Thinking, TAS; TAS Total Score, QUID; Questionario Italiano sul Dolore, Sensorial Pain Rating Index (QUID-S), Affective Pain Rating Index (QUID-A), VAS; Visual Analog Scale for pain intensity, QUID-T; Total Pain Index, HADS-A; Hamilton Anxiety and Depression Scale-Anxiety, HADS-D; Hamilton Anxiety and Depression Scale-Depression. P values from Kruskal-Wallis non-parametric test.