Table 3. The results of NIH-CPSI of all patients.

Parameter	Group 1		Group 2
	Before treatment	After treatment	Before treatment	After treatment
	median value (range)	median value (range)	median value (range)	median value (range)
NIH-CPSI
Total score	24.0 (21.0–32.0)	19.0 (9.0–24.0)	24.0 (16.0–33.0)	11.0 (4.0–18.0)**
Pain subscore	12.0 (7.0–18.0)	8.0 (3.0–13.0)	11.0 (7.0–18.0)	5.0 (0–8.0)**
Urinary subscore	6.0 (2.0–8.0)	5.0 (1.0–7.0)	6.0 (1.0–9.0)	3.0 (1.0–5.0)*
QoL subscore	8.0 (6.0–9.0)	6.0 (4.0–8.0)	8.0 (5.0–9.0)	3.0 (2.0–4.0)**

Abbreviations: NIH-CPSI, National Institute of Health Chronic Prostatitis Symptom Index; QoL, quality of life.

Group 1: chronic bacterial prostatitis with prostatic calculi; Group 2: chronic bacterial prostatitis without prostatic calculi.

Data presented as median values (range).

*P>0.05, **P<0.01, vs. Group 1.