Clinical characteristics of acute non-varicose upper gastrointestinal bleeding and the effect of endoscopic hemostasis

Table 1 Clinical characteristics of the included patients

Items		Number	Percentage
Sex	Men	396	74.44
	Women	136	25.56
Age (yr)	Young group (age < 40)	139	26.13
	Middle-aged group (age < 60 but ≥ 40)	221	41.54
	Elderly group (age ≥ 60)	172	32.33
Chief complaint	Melena	232	43.60
	Hematemesis	146	27.40
	Both hematemesis and melena	90	17.00
	Abdominal pain	32	6.00
	Atypical complaints (dizziness, weakness)	32	6.00
Hemoglobin levels	Hb ≤ 30 g/L	8	1.50
	Hb 30-60 g/L	58	10.90
	Hb 60-90 g/L	203	38.20
	Hb 90-120 g/L	134	25.20
	Hb ≥ 120 g/L	129	24.20
Precipitating factor	Drugs	129	24.20
	Alcohol	84	15.80
	Diet	15	2.80
	Psychological factors	21	4.00
	No precipitating factor	283	53.20