Table 1.

Descriptive Studies on the Incidence of Acute Urinary Retention (AUR)

Author/Source	Description	No. of	Cohort	Years of	% Overall	% Year	IR/1000	95% CI
	of Cohort	Cases		Follow-up			patient years
Ball et al,	Watchful	2	107	5	1.9	0.37	3.7
198116	waiting study
Craigen et al,	Watchful						15.0
196917	waiting study
Birkhoff et al,	Watchful	10	26	3	39	13	130
197615	waiting study
Wasson et al,	TURP vs. watchful	8	276	3	2.8	0.9	9.6
199519	waiting VA COOP
Hunter et al,	Self-reported prior	102	2002	?	5.1		50.9
199718	events in Spanish men
Barry et al,	Prostatectomy	40	500	4	8	2.5	25
199720	candidates
Meigs et al,	Physicians Health	82	6100	3	1.3		4.5	3.1–6.2
199921	Study, self-reported
Olmsted	Community cohort	57	2115	4			6.8	5.2–8.9
County,	40–49 years old
199722
McConnell et al,	Placebo group	99	1376	4	7.2	1.8	18
199828	of Pless Study
Andersen et al,	Placebo groups of	57	2109	2	2.7	1.35	13.5
199724	2-year BPH studies