Table 3.

Distribution of prostatitis by case/control status and associated prostate cancer risk in full sample and stratified by race

Type of prostatitis		Cases		Controls		Crude		Adjusted a
		Number	Percent	Number	Percent	Odds ratio (95% CI)	P-value	Odds ratio (95% CI)	P-value
Full sample (n = 574 pairs)
None		472	82.2	469	81.7	Reference		Reference
All prostatitis		102	17.8	105	18.3	0.96 (0.71–1.31)	0.81	0.82 (0.58–1.15)	0.24
Acute	I	30	5.2	28	4.9	1.07 (0.64–1.81)	0.79	0.92 (0.51–1.67)	0.79
Chronic	II	12	2.1	12	2.4	0.92 (0.65–1.31)	0.65	0.79 (0.53–1.17)	0.24
	IIIa/IIIb	60	10.5	6	11.3
Whites (n = 345 pairs)
None		293	84.9	303	87.8	Reference		Reference
All prostatitis		52	15.1	42	12.2	1.29 (0.83–2.00)	0.26	1.20 (0.76–1.99)	0.40
Acute	I	16	4.6	16	4.6	1.00 (0.50–2.00)	1.00	0.92 (0.43–1.99)	0.84
Chronic	II	7	2.0	3	0.9	1.48 (0.85–2.57)	0.17	1.45 (0.79–2.64)	0.23
	IIIa/IIIb	29	8.4	23	6.7
African Americans (n = 229 pairs)
None		179	78.2	166	72.5	Reference		Reference
All prostatitis		50	21.8	63	27.5	0.73 (0.47–1.13)	0.16	0.51 (0.30–0.85)	0.01
Acute	I	14	6.1	12	5.2	1.18 (0.53–2.64)	0.68	0.93 (0.37–2.40)	0.88
Chronic	II	5	2.2	9	3.9	0.65 (0.41–1.05)	0.08	0.47 (0.27–0.81)	0.007
	IIIa/IIIb	31	13.5	42	18.3

Abbreviations: CI, confidence interval; HGPIN, high-grade prostatic intraepithelial neoplasia.

^aAdjusted for PSA level, presence of HGPIN and number of PSA tests.