TABLE 5.

Comparison of autonomic activity in patients with severe upper gastrointestinal symptoms

	GCSI < 4 (N = 207)	GCSI ≥ 4 (N = 35)	P
Initial baseline (resting)
Sympathovagal balance (LFa/RFa)	1.2 (0.6–2.3)	1.8 (1.0–3.1)	.006
Deep breathing
Parasympathetic activity (RFa)	14.4 (3.5–43.8)	9.2 (2.6–29.5)	.49
Valsalva
Sympathetic activity (LFa)	18.5 (4.7–40.8)	19.6 (6.2–43.1)	.91
Parasympathetic activity (RFa)	2.7 (0.8–7.5)	2.1 (0.8–5.9)	.61
Standing
Sympathetic activity (LFa)	1.7 (0.5–5.0)	1.4 (0.5–3.0)	.32
Sympathovagal balance (LFa/RFa)	2.7 (1.2–4.8)	3.9 (1.5–6.0)	.08
Parasympathetic activity (RFa)	0.6 (0.2–1.7)	0.4 (0.1–0.8)	.03