Table 2 Characteristics of erectile dysfunction in the study population

From: Intracavernosal prostaglandin E1 self vs office injection therapy in patients with erectile dysfunction

Characteristics Office injection (N=192) Self-injection (N=106) P-value*
ED duration (years)    >0.05
 <1 7 (3.6%) 4 (3.8%)  
 1 to <5 113 (58.9%) 61 (57.5%)  
 5 to <10 41 (21.4%) 24 (22.6%)  
10 31 (16.1%) 17 (16%)  
ED severity    >0.05
 Mild 21 (10.9%) 10 (9.4%)  
 Moderate 76 (39.6%) 44 (41.5%)  
 Severe 95 (49.5%) 52 (49.1%)  
Onset    >0.05
 Sudden 29 (15.1%) 17 (16%)  
 Gradual 163 (84.9%) 89 (84%)  
Course    >0.05
 Progressive 125 (65.1%) 70 (66%)  
 Stationary 49 (25.5%) 28 (26.4%)  
 Regressive 18 (9.4%) 8 (7.6%)