Table 2.

Diagnostic tests for the case groups.

	Laboratory tests frequency (%)
	Anti-tTG		SBB		HLA result
Patient groups	Positive	Negative	Positive	Negative	Positive	Negative	Notes
A	–	–	–	–	3 [8.5%]	27 [77.1%]
B	29 [82.8%]	6 [17.1%]	20 [57.1%]	3 [8.5%]	35 [100%]	0
C	24 [68%]	11 [31%]	3 [8.5%]	6 [17.1%]	24 [68%]	11 [31.4%]	24 had CD
D	9 [25.7%]	26 [74.2%]	4 [11.4%]	0	32 [91.4%]	3 [8.6%]	9 had CD
E	–	–	–	–	9 [25.7%]	26 [74.2%]	None had CD

Group A: control; Group B: diagnosed cases of celiac disease; Group C: patients with celiac-like symptoms; Group D: type 1 diabetes patients with celiac-like symptoms; Group E: type 1 diabetes patients.

HLA-typing: alleles detected: HLA-DQA1∗05, DQB1∗02, and/or DQB1∗03:02.

Anti-tTG = anti tissue transglutaminase; CD = celiac disease; SBB = small bowel biopsy.