Table 3. Association rules of complications after the onset of depression for patients with X = other causes of gastroenteritis and colitis, infections, and unknown causes and Y = gastritis and duodenal inflammation.

Rule	Medical history 1	Medical history 2	Support (%)	Confidence (%)	Lift
1	Keratitis	Refraction and accommodation disorders	4.4	60.3	3.7
2	Other disorders of the kidney and ureter not elsewhere classified	Other liver diseases	4.3	57.6	3.2
3	Response to severe stress and disability	Sleeping disorder	3.7	52.7	2.0
4	Lacrimal disorders	Refraction and accommodation disorders	2.9	59.0	3.6
5	Purine and pyrimidine metabolism disorders	Other liver diseases	2.5	58.8	3.2