Log in with your email address username.


Important notice

doctorportal Learning is on the move as we will be launching a new website very shortly. If you would like to sign up to dp Learning now to register for CPD learning or to use our CPD tracker, please email support@doctorportal.com.au so we can assist you. If you are already signed up to doctorportal Learning, your login will work in the new site so you can continue to enrol for learning, complete an online module, or access your CPD tracker report.

To access and/or sign up for other resources such as Jobs Board, Bookshop or InSight+, please go to www.mja.com.au, or click the relevant menu item and you will be redirected.

All other doctorportal services, such as Find A Doctor, are no longer available.

Risk factors for erectile dysfunction in a cohort of 108 477 Australian men

- Featured Image

Erectile dysfunction (ED) confronts many men as they age. Its causes can be both organic and psychogenic.1 ED has been associated with medical conditions (eg, diabetes), certain lifestyle factors, many medical treatments (eg, surgery for prostate cancer and some antidepressant medications), and is increasingly recognised as an early marker of cardiovascular disease.24 Hence, it is important to establish risk factors for ED as men age because the prevalence of different health behaviours and pre-existing conditions are likely to change with age. Men participating in the 45 and Up Study — a population-based cohort study of people aged 45 and over, resident in New South Wales5 — provided an excellent source for a population-wide description of ED. We hypothesised that the association between lifestyle risk factors and ED may vary according to age.


Participants in the 45 and Up Study were randomly sampled from the Medicare enrolment database, with twofold oversampling of men aged 80 years and over and of regional residents. All residents in remote areas were invited to participate. The participation rate was about 18%. The 45 and Up Study sample has excellent heterogeneity and is reasonably representative of the NSW population; the…