Table 5.

Results from respondents in GoDARTS and GS:SFHS completing the pain and pain interference items

Study		N*	Mean	SD	Median	IQR	Theoretical range
GoDARTS	EQ-5D-5L	1710	0.67	0.276	0.735	0.282	−1.594
	PROMIS SF-4a
	Depression	1644	49.7	9.3	49	16.3	41.0–79.4
	Anxiety	1632	48.7	9.4	48	15.5	40.3–81.6
	Sleep Disturbance	1528	50.7	9.2	50.5	12.3	32.0–73.3
	TIPI
	Extraversion	1649	4	1.4	4	2	1.0–7.0
	Agreeableness	1673	5.1	1.2	5	2	1.0–7.0
	Conscientiousness	1665	5.4	1.3	5.5	2	1.0–7.0
	Emotional stability	1679	4.9	1.5	5	2.5	1.0–7.0
	Open to new experiences	1664	4.6	1.3	4.5	1.5	1.0–7.0
	PCS	1661	10.2	11.8	6	14	0–52
	MNSI	1586	2.6	2.5	2	4	0–13
	DN4	875	2.2	2.1	2	4	0–7
	S-LANSS	985	7.2	7.2	5	13	0–24
GS:SFHS	EQ-5D-5L	6888	0.823	0.184	0.837	0.25	−1.594
	PROMIS SF-4a
	Depression	6888	47.4	7.9	41	12.9	41.0–79.4
	Anxiety	6899	47.9	8.5	48	13.4	40.3–81.6
	Sleep Disturbance	6563	48.4	8.4	48.4	10.5	32.0–73.3
	TIPI
	Extraversion	6922	4.2	1.5	4	2.5	1.0–7.0
	Agreeableness	6959	5.4	1.1	5.5	2	1.0–7.0
	Conscientiousness	6950	5.8	1.1	6	2	1.0–7.0
	Emotional stability	6983	5.1	1.5	5.5	2.5	1.0–7.0
	Open to new experiences	6963	4.9	1.2	5	2	1.0–7.0
	PCS	6966	6.8	8.3	4	9	0–52
	DN4	3681	1.2	1.6	1	2	0–7
	S-LANSS	4138	4.9	5.9	3	8	0–24

*Sample size only includes participants with non-missing responses for all questions that make up the item.

DN4, Douleur Neuropathique en 4 Questions; EQ-5D-5L, EuroQoL-five dimensions-five levels; GoDARTS, Genetics of Diabetes Audit and Research in Tayside Scotland; GS-SFHS, Generation Scotland: Scottish Family Health Study; IQR, interquartile range; MNSI, Michigan Neuropathy Screening Instrument; PCS, Pain Catastrophising Scale; PROMIS SF4a, Patient-Reported Outcomes Measurement Information System short form four answers; SD, standard deviation; S-LANSS, self-completed Leeds Assessment of Neuropathic Symptoms and Signs; TIPI, 10-Item Personality Inventory.