Clinical characteristics of hospitalized children with gastrointestinal bleeding and risk factors for associated anemia

Table 8 Univariate logistic regression for risk of anemia

Variables	β	OR (95%CI)	P value
Age (year)
≤ 2		1.00
2-5	0.10	1.10 (0.34-3.60)	0.875
5-12	1.33	3.77 (1.45-9.81)	0.006
> 12	1.82	6.19 (1.92-19.91)	0.002
Sex
Male		1.00
Female	0.33	1.39 (0.72-2.68)	0.324
Place of residence
Urban		1.00
Rural	0.69	2.00 (1.02-3.92)	0.043
Use of NSAIDs
No		1.00
Yes	0.27	1.31 (0.58-2.96)	0.519
Hematochezia
No		1.00
Yes	-0.79	0.46 (0.24-0.88)	0.019
Vomiting
No		1.00
Yes	0.43	1.54 (0.79-3.00)	0.202
Hematemesis
No		1.00
Yes	0.16	1.18 (0.57-2.45)	0.661
Abdominal pain
No		1.00
Yes	0.50	1.65 (0.85-3.20)	0.136
Melena (n)
No		1.00
Yes	2.77	15.94 (6.99-36.38)	< 0.001
Diarrhea
No		1.00
Yes	-1.94	0.14 (0.03-0.61)	0.009
White blood cell count	-0.11	0.89 (0.81-0.99)	0.029
Monocyte count	-0.51	0.60 (0.25-1.47)	0.264
Lymphocyte count	-0.50	0.61 (0.47-0.79)	< 0.001
Neutrophil count	-0.02	0.98 (0.91-1.06)	0.670
Albumin	-0.19	0.83 (0.77-0.89)	< 0.001
Serum potassium	-1.25	0.29 (0.12-0.67)	0.004
Serum sodium	-0.03	0.97 (0.86-1.09)	0.569
Blood urea nitrogen	0.20	1.22 (1.03-1.45)	0.019
Serum creatinine	0.02	1.02 (0.99-1.04)	0.235
C-reactive protein	-0.01	0.99 (0.96-1.02)	0.418
Activated partial thromboplastin time	-0.14	0.87 (0.79-0.95	0.002
Prothrombin time	0.47	1.61 (1.22-2.13)	< 0.001

NSAID: Non-steroidal anti-inflammatory drug.