Table 2.

NIH-CPSI scores and Chinese Medicine (CM) symptoms after the intervention $\left(\overline{\mathrm{\chi }}\pm \mathrm{S}\right)$

Scores	TA (n = 38)			LA (n = 39)
	Pre-treatment	Post-treatment	Follow up	Pre-treatment	Post-treatment	Follow up
NIH-CPSI (total)	26.7 ± 4.9	22.6 ± 5.2*	17.3 ± 9.1*	26.6 ± 5.8	17.0 ± 6.0*△	9.4 ± 8.6*△
Pain or discomfort	11.1 ± 2.8	9.0 ± 2.7*	6.6 ± 4.0*	11.1 ± 3.1	6.5 ± 3.0*△	3.3 ± 3.8*△
Urination	5.8 ± 2.8	5.0 ± 2.0*	3.8 ± 3.1*	5.4 ± 3.3	3.5 ± 2.6*△	2.1 ± 2.6*
Impact of symptoms	5.0 ± 1.0	4.4 ± 1.2*	3.4 ± 1.8*	5.2 ± 1.1	3.5 ± 1.6*△	2.0 ± 1.7*△
Quality of life	4.9 ± 1.2	4.4 ± 1.4*	3.5 ± 1.7*	4.9 ± 1.1	3.5 ± 1.3*△	2.0 ± 1.6*△
CM symptom	15.3 ± 7.3	12.1 ± 5.7*	-	14.0 ± 5.0	8.4 ± 5.3*△	-

*, P < 0.05 when comparison the pre-treatment score and post-treatment score in the same group; △, P < 0.05 when comparing the long-needle acupuncture group and the conventional acupuncture group. An ITT method was applied for analysis