Erection Hardness Score (EHS)

Erection Hardness Score (EHS) is a much simple than the International Index of Erectile Function (IIEF) scoring. Therefore it is much easier and faster to use when we need to diagnose patient with erectile dysfunction.

EHS rates the hardness of erection on a scale of one to four, with four being the maximal score. The language used is simple and direct, so that men with ED can use the scale to assess the severity of their condition and to monitor the impact of treatment.

A score of 1 indicates that the penis is larger than normal, but not hard;--> correlates with severe dysfunction (IIEF score 0-6)

A score of 2 indicates that the penis is hard, but not hard enough for penetration;--> correlates with moderate dysfunction (IIEF score 7-12)

A score of 3 indicates that the penis is hard enough for penetration but not completely hard; --> correlates with mild to moderate dysfunction (IIEF score 13-24)

A score of 4 indicates that the penis is completely hard and fully rigid; --> correlates with no dysfunction (IIEF score 25-30)

To compare it with IIEF Scoring, you might want to see about the IIEF scoring right here.

Reference:

http://www.viagra.com/about-erectile-dysfunction/erectile-dysfunction-symptoms/erection-hardness-score.aspx