Benign prostatic hyperplasia is a significant risk factor for bladder cancer in diabetic patients: a population-based cohort study using the National Health Insurance in Taiwan

Tseng, Chin-Hsiao

doi:10.1186/1471-2407-13-7

Table 2 Incidence of bladder cancer with regards to benign prostatic hyperplasia by status or duration with and without surgical procedures

From: Benign prostatic hyperplasia is a significant risk factor for bladder cancer in diabetic patients: a population-based cohort study using the National Health Insurance in Taiwan

BPH status/duration	Case number	n of Incident bladder cancer	%	Person-years	Incidence rate
BPH status/duration	Case number	n of Incident bladder cancer	%	Person-years	(per 100,000 person-years)
All ages
I. BPH by status
No BPH	462432	1127	0.24	1625241.83	69.34
BPH	85152	742	0.87	286736.17	258.77
BPH/procedures (−)	78526	658	0.84	263103.83	250.09
BPH/procedures (+)	6626	84	1.27	23632.33	355.45
II. BPH by duration
All BPH patients
<1 year	16163	126	0.78	54808.83	229.89
1-3 years	23955	199	0.83	81308.00	244.75
3-5 years	20649	203	0.98	69799.92	290.83
≥5 years	24385	214	0.88	80819.42	264.79
BPH/procedures (−)
<1 year	12421	107	0.86	41550.17	257.52
1-3 years	23005	180	0.78	77899.17	231.07
3-5 years	19952	186	0.93	67255.08	276.56
≥5 years	23148	185	0.80	76399.42	242.15
BPH/procedures (+)
<1 year	3742	19	0.51	13258.67	143.30
1-3 years	950	19	2.00	3408.83	557.38
3-5 years	697	17	2.44	2544.83	668.02
≥5 years	1237	29	2.34	4420.00	656.11
Age ≥60 years
I. BPH by status
No BPH	201704	779	0.39	685559.17	113.63
BPH	71944	684	0.95	238880.17	286.34
BPH/procedures (−)	65952	605	0.92	217633.42	277.99
BPH/procedures (+)	5992	79	1.32	21246.75	371.82
II. BPH by duration
All BPH patients
<1 year	12864	111	0.86	42903.33	258.72
1-3 years	19405	182	0.94	64903.08	280.42
3-5 years	17536	193	1.10	58425.00	330.34
≥5 years	22139	198	0.89	72648.75	272.54
BPH/procedures (−)
<1 year	9567	93	0.97	31307.58	297.05
1-3 years	18529	164	0.89	61772.17	265.49
3-5 years	16885	176	1.04	56058.00	313.96
≥5 years	20971	172	0.82	68495.67	251.11
BPH/procedures (+)
<1 year	3297	18	0.55	11595.75	155.23
1-3 years	876	18	2.05	3130.92	574.91
3-5 years	651	17	2.61	2367.00	718.21
≥5 years	1168	26	2.23	4153.08	626.04

BPH benign prostatic hyperplasia, HR hazard ratio, CI confidence interval.

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ISSN: 1471-2407

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