Late Complications following Endoscopic Sphincterotomy for Choledocholithiasis: A Swedish Population-Based Study

Table 2

Patient distribution correlated to age, sex, and start of follow-up.

		Patients	% of the total cohort
Gender	Women	546	57
	Men	418	43
Age at the start of follow-up (years)	<50	80	8
	50–64	200	21
	65–79	397	41
	80+	287	30
Calendar year at the start of follow-up	1977–80	74	8
	1981–85	551	57
	1986–91	337	35
		Median/mean	Range
Age of the patients at start of follow-up		73/70.6	21–95
Number of years in follow-up	Patients	8.9/8.9	0–20.9
	Controls	7.4/8.3	0–20.9