Table 2. Descriptive statistics of standardized serum total LDH values (xURL) according to the characteristics of alimentary lymphoma and IBD.

	Descriptive statistics			Abnormal values
	Mean±SD	Median (IQR)	Range
Alimentary lymphoma (n = 33)	1.16±0.80	1.07 (0.59–1.35)	0.11–3.84	19 (57.6%)
Location:
- Stomach (n = 18)	1.16±0.79	1.12 (0.62–1.32)	0.11–3.84	12 (66.7%)
- Small bowel (n = 11)	1.36±0.90	1.07 (0.62–2.34)	0.42–2.93	6 (54.5%)
- Stomach and small bowel (n = 4)	0.63±0.32	0.56 (0.36–0.97)	0.33–1.07	1 (25.0%)
	P = 0.295 a			P = 0.303 b
Immunophenotype:
- T-lymphoma (n = 18)	1.03±0.74	0.95 (0.46–1.20)	0.11–2.93	9 (50.0%)
- B-lymphoma (n = 10)	1.15±0.34	1.24 (0.95–1.32)	0.56–1.70	8 (80.0%)
	P = 0.227 a			P = 0.226 c
Grade:
- Low grade (n = 19)	1.02±0.72	0.89 (0.48–1.10)	0.11–2.93	9 (47.4%)
- High grade (n = 14)	1.35±0.90	1.24 (0.63–1.48)	0.46–3.84	10 (71.4%)
	P = 0.155 a			P = 0.286 c
IBD (n = 38):	0.91±0.73	0.71 (0.51–1.05)	0.35–4.18	10 (26.3%)
Grade:
- Mild (n = 8)	0.65±0.23	0.58 (0.46–0.84)	0.38–1.06	1 (12.5%)
- Moderate (n = 16)	1.02±1.03	0.67 (0.49–0.87	0.35–4.18	3 (18.8%)
- Severe (n = 14)	0.94±0.46	0.76 (0.51–1.44)	0.36–1.66	6 (42.9%)
	P = 0.456 a			P = 0.095 d

xURL: fraction of the upper reference limit.

^a One-way ANOVA.

^b Pearson chi-square.

^c Fisher’s exact test.

^d Liner-by-linear chi-square.