Ontario Printed Educational Message trial (OPEM): changing physician decision making towards more evidence based choices

Printed Educational Materials (PEMs) and their impact on physician decision making towards more evidence based choices: a single centre randomised tria

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN72772651

Enrollment

5547

Registered

2005-07-21

Start date

2005-01-01

Completion date

Unknown

Last updated

2021-12-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diabetes, hypertension Nutritional, Metabolic, Endocrine Diabetes

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Printed educational materials directed at Ontario family physicians do not improve adherence to guideline recommendations for diabetes management: a pragmatic, factorial, cluster randomized controlled trial [ISRCTN72772651]

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Printed educational messages fail to increase use of thiazides as first-line medication for hypertension in primary care: a cluster randomized controlled trial [ISRCTN72772651].

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A theory-based process evaluation alongside a randomised controlled trial of printed educational messages to increase primary care physicians’ prescription of thiazide diuretics for hypertension [ISRCTN72772651]

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Printed educational messages aimed at family practitioners fail to increase retinal screening among their patients with diabetes: a pragmatic cluster randomized controlled trial [ISRCTN72772651]

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Looking inside the black box: results of a theory-based process evaluation exploring the results of a randomized controlled trial of printed educational messages to increase primary care physicians' diabetic retinopathy referrals [Trial registration number ISRCTN72772651].

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Interventions

Posted printed educational materials (PEM) as follows: Intervention arm 1 will receive 'informed' with an attached short outsert Intervention arm 2 will receive 'informed' with an attached short outse

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 5547 actively practicing family (FP) and general practitioners (GP) in Ontario (~25 years and above, either sex) that have more than 100 patients over 65 years of age in fee for service practice with greater $50,000 billings to OHIP in 2003, randomised each time for three mail-outs of PEMs - the Printed Educational Materials

Exclusion criteria

Exclusion criteria: Physicians who have elected not to receive 'informed', a newsletter on evidence based practice out of the Institute for Clinical Evaluative Sciences (ICES)

Design outcomes

Primary

Measure	Time frame
Three trials: 1. Proportion of new hypertensives on diuretics 2. Proportion of diabetics who receive retinal screening 3. Proportion of diabetics who receive lipid lowering and antihypertensive medication and an ACE inhibitor All measured from routinely collected health insurance and administrative information: OHRI, ODB, CIHI	—

Secondary

Measure	Time frame
No secondary outcome measures	—

Countries

Canada

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 19, 2026