Final diagnoses in those individuals with type 1 diabetes and diarrhea
| Diagnosis | n (%) |
| Irritable bowel syndrome | 34 (36.2) |
| Autonomic neuropathy | 14 (14.9)* |
| Inflammatory bowel disease | 10 (10.6)† |
| Celiac disease | 9 (9.6) |
| Exocrine pancreatic disease | 6 (6.4)‡ |
| Small bowel bacterial overgrowth | 5 (5.3) |
| Lactose intolerance | 1 (1.1) |
| IgA deficiency | 1 (1.1) |
| Diverticular disease | 1 (1.1) |
| Peritoneal dialysis-related | 1 (1.1) |
| Rectal cancer | 1 (1.1) |
| Unclassified | 11 (11.7) |
↵* 5 individuals had small bowel bacterial overgrowth on glucose hydrogen breath testing.
↵† 7 ulcerative colitis, 2 Crohn’s disease and 1 microscopic colitis.
↵‡ 2 individuals had calcific pancreatitis on CT scanning (2 individuals had celiac disease and chronic pancreatitis, 2 individuals had celiac disease and inflammatory bowel disease, and 1 individual had celiac disease and autonomic neuropathy).