Table 2.

Frequency of demographic variables

Demographic variables	Frequency		Percent (%)
Age (years)	CBST	SC	CBST	SC
Minimum	21	24
Maximum	39	39	.	.
Age groups (years)	CBST	SC	CBST	SC
18–29	5	7	38.5	46.7
30–39	8	8	61.5	53.3
Total	13	15	100.0	100.0
NOED duration	CBST	SC	CBST	SC
6 months–1 year	1	5	7.7	33.3
1–3 years	7	7	53.8	46.7
Beyond 3 years	5	3	38.5	20.0
Total	13	15	100.0	100.0

CBST = cognitive behavior sex therapy; NOED = nonorganic erectile dysfunction; SC = sildenafil citrate.