Table 1. Comparisons of IDA Incidence Among Patients With and Without Colon Cancer.

Gender	Age,years	Without colon cancer		With colon cancer		p-value
		PatientNo.	IDA (%)	PatientNo.	IDA (%)
Female	55–64	1882	5 (0.3)	1882	124 (6.6)	<0.0001
	65–74	2829	15 (0.5)	2829	257 (9.1)	<0.0001
	≥75	2699	22 (0.8)	2712	304 (11.2)	<0.0001
	Total	7410	42 (0.6)	7423	685 (9.2)	<0.0001
Male	55–64	2442	2 (0.1)	2442	111 (4.6)	<0.0001
	65–74	3904	18 (0.5)	3904	225 (5.8)	<0.0001
	≥75	3341	15 (0.5)	3403	239 (7.0)	<0.0001
	Total	9687	35 (0.4)	9749	575 (5.9)	<0.0001
Total		17097	77 (0.5)	17172	1260 (7.3)	<0.0001

IDA: iron deficiency anemia; No.: number.