Table 3.

Baseline characteristics of all enrolled patients.

Parameter	All participants		Group A		Group B		Group C		Group D		Level of sign.
Total number	49		4		10		15		20
Men	32	(65)	3	(75)	5	(50)	12	(80)	12	(60)	0.411
IHD	18	(37)	2	(50)	6	(60)	6	(40)	4	(20)	0.164
CHF	23	(47)	2	(50)	2	(50)	6	(40)	10	(50)	0.937
Stroke/TIA	10	(20)	3	(75)	2	(20)	2	(13)	3	(15)	0.043
PVD	10	(20)	2	(50)	1	(10)	3	(20)	4	(20)	0.419
Hypertension	46	(94)	4	(100)	8	(80)	15	(100)	19	(95)	0.201
DM type 1	4	(8)	0		0		2	(13)	2	(10)	0.600
DM type 2	16	(33)	2	(50)	10	(40)	6	(40)	4	(20)	0.455
Total symptom score, thresholds and trigger											0.167
Level 0 points	16	(33)	0		0		7	(46)	9	(45)
Level 1–4 points	24	(49)	3	(75)	7	(70)	6	(40)	8	(40)
Level 5–6 points	8	(16)	1	(25)	3	(30)	1	(7)	3	(15)
Level ≥7 points	1	(2)	0		0		1	(7)	0

Differences tested for significance with the chi-square test.

Data presented as numbers of participants (%).

*p < 0.05; **p < 0.01.

IHD: ischaemic heart disease; CHF: congestive heart failure; DM: diabetes mellitus; PVD: peripheral vascular disease; TIA: transient ischaemic attack.