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Table 2 Factors associated with submucosal hematoma and ingestion of ammonia

From: Submucosal hematoma: a new distinctive sign during emergency upper digestive endoscopy for ammonia ingestion

  Submucosal hematoma present
N = 15
Submucosal hematoma absent
N = 28
P value
Volume ingested (n,%)    
 < 150 ml
 > 150 ml
 Unknown
10 (66.7)
3 (20.0)
2 (13.3)
24 (85.7)
4 (14.3)
0
0.16
Endoscopic grade (n,%)    
 0
 I
 IIA
 IIB
 IIIA
 IIIB
0 (0)
2 (13.3)
3 (20.0)
5 (33.3)
2 (13.3)
3 (20.0)
9 (32.1)
4 (14.3)
9 (32.1)
1 (3.6)
3 (10.7)
2 (7.1)
0.02
Extradigestive manifestations (n,%)    
 Oropharyngeal lesions
 Clinical signs of severity
12 (80.0)
6 (40.0)
18 (64.3)
2 (7.1)
0.2
0.01
Management (n,%)    
 Medical
 Endoscopic dilation
 Surgical procedures
12 (80.0)
1 (6.7)
2 (13.3)
26 (92.8)
1 (3.6)
1 (3.6)
0.4
Outcome (n,%)    
 Favourable
 Stenosis
 Death
11 (73.4)
2 (13.3)
2 (13.3)
25 (89.3)
1 (3.6)
2 (7.1)
0.4
  1. Quantitative values are expresssed in n(%). Differences at P<0.05 are bolded