The NHS Executive has issued guidance on how to decide whether men are suffering 'severe distress' because of impotence and therefore qualify for treatment from NHS specialist services. A circular says the following criteria should be taken into account: significant disruption to normal social and occupational activity; marked effect on mood, behaviour, social and environmental awareness; and marked effect on interpersonal relationships. It also says doctors might like to consider research suggesting that the 'average frequency of sexual intercourse in the 40-60 age range' is once a week.
Treatment for Impotence: patients with severe distress. http://tap.ccta.gov.uk/doh/coin4.nsf