Table 4.

Characteristics of patients before and after propensity score matching

	Sedation	Nonsedation	P value	Standardized difference
Before propensity score matching
Number of patients (N)	171	218
Age (years)	70.1 ± 13.9	74.8 ± 12.3	< 0.01	0.36
Gender, males	123 (71.9%)	133 (61.0%)	0.03	0.23
Helicobacter pylori infection	50 (29.2%)	41 (18.8%)	0.02	0.25
Using antithrombotic agents	45 (26.3%)	86 (39.5%)	0.01	0.28
Using NSAIDs	31 (18.1%)	61 (28.0%)	0.03	0.24
Chronic liver damage	46 (26.9%)	38 (17.4%)	0.03	0.23
Rockall score	4.4 ± 1.4	4.7 ± 1.5	0.01	0.21
Glasgow-Blatchford score	9.8 ± 4.2	10.9 ± 3.8	0.01	0.27
AIMS65 score	1.4 ± 0.9	1.6 ± 1.0	< 0.01	0.21
Systolic blood pressure (mmHg)	121.0 ± 24.4	112.7 ± 26.7	< 0.01	0.32
Diastolic blood pressure (mmHg)	66.0 ± 14.4	61.3 ± 15.3	< 0.01	0.32
Hemoglobin (g/dL)	8.9 ± 3.0	8.1 ± 2.6	< 0.01	0.28
Peptic ulcer	84 (49.1%)	130 (59.6%)	0.04	0.22
After propensity score matching
Number of patients (N)	133	133
Age (years)	71.1 ± 13.8	72.7 ± 12.6	0.31	0.12
Gender, males	91 (68.4%)	92 (69.2%)	1.00	0.02
Helicobacter pylori infection	34 (25.6%)	35 (26.3%)	1.00	0.02
Using antithrombotic agents	40 (30.1%)	40 (30.1%)	1.00	0.00
Using NSAIDs	27 (20.3%)	27 (20.3%)	1.00	0.00
Chronic liver damage	34 (25.6%)	32 (24.1%)	0.89	0.03
Rockall score	4.5 ± 1.4	4.5 ± 1.4	0.96	0.00
Glasgow-Blatchford score	10.5 ± 3.7	10.1 ± 4.1	0.34	0.10
AIMS65 score	1.5 ± 1.0	1.5 ± 1.0	0.95	0.00
Systolic blood pressure (mmHg)	118.9 ± 23.4	119.4 ± 28.0	0.88	0.02
Diastolic blood pressure (mmHg)	64.4 ± 13.7	62.9 ± 15.9	0.40	0.10
Hemoglobin (g/dL)	8.4 ± 2.7	8.6 ± 2.7	0.43	0.07
Peptic ulcer	69 (51.9%)	72 (54.1%)	0.81	0.04

NSAIDs nonsteroidal anti-inflammatory drugs

Results are presented as mean ± SD or number of patients