Gene polymorphisms associated with sudden decreases in heart rate during extensive peritoneal lavage with distilled water after gastrectomy

Table 2 Baseline and clinical parameters of patients with ≥ 15% vs < 15% heart rate variability, n (%)

Variable	HRV ≥ 15%	HRV < 15%	χ2	P value
Sex			0.015	0.90
Female	21 (38.18)	34 (61.82)
Male	51 (37.23)	86 (62.77)
Age (yr)			1.232	0.27
< 60	16 (45.71)	19 (54.29)
≥ 60	56 (35.67)	101 (64.33)
Smoking status			0.412	0.52
No	58 (36.48)	101 (63.52)
Yes	14 (42.42)	19 (57.58)
Hypertension			0.006	0.94
No	46 (37.70)	76 (62.30)
Yes	26 (37.14)	44 (62.86)
Diabetes			2.618	0.11
No	63 (35.80)	113 (64.20)
Yes	9 (56.25)	7 (43.75)
Blood type			1.803	0.61
A	27 (36.99)	46 (63.01)
AB	5 (25.00)	15 (75.00)
B	17 (38.64)	27 (61.36)
O	23 (41.82)	32 (58.18)
Thyroid function			0.289	0.59
Normal	63 (36.84)	108 (63.16)
Abnormal	9 (42.86)	12 (57.14)

All P values are more than 0.05. HRV: Heart rate variability.