Table 2.

Results of premature ejaculation evaluation using Premature Ejaculation Diagnostic Tool, intravaginal ejaculatory latency time, and dorsal nerve somatosensory evoked potential at baseline and after 3 months of the penis-root masturbatory training

Case	PEDT score		IELT (s)		DNSEP (ms)
	Baseline	3 months	Baseline	3 months	Baseline	3 months
1	10	10	60	300	37.4	39.5
2	14	10	60	240	39.0	40.0
3	19	18	30	60	34.4	34.6
4	16	17	60	60	37.0	37.6
5	13	16	60	60	42.9	42.1
6	20	14	60	300	37.6	34.9
7	17	14	60	180	40.0	38.2
8	15	11	60	120	42.1	NA
9	9	5	60	240	38.2	41.6
Mean±s.d.	14.8±3.7	12.8±4.1	56.7±10.0	173.3±101.5	38.31±2.47 (8 cases) 38.73±2.63 (9 cases)	38.56±2.80
Median (range)	15 (9–20)	14 (5–18)	60 (30–60)	180 (60–300)	38.20 (34.40–42.90)	38.85 (34.60–42.10)
P		0.074		0.018		0.734

Differences in the mean PEDT scores and DNSEP in patients before and after a 3-month training were compared using the paired t-test. Differences in the self-reported IELT in patients before and after a 3-month training were compared using the Wilcoxon signed-rank test. Differences were considered statistically significant at P<0.05. DNSEP: dorsal nerve somatosensory evoked potential; IELT: intravaginal ejaculation latency time; PEDT: Premature Ejaculation Diagnostic Tool; NA: not available; s.d.: standard deviation