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Table 1 Summary of results for CCDSS trials of drug prescribing

From: Computerized clinical decision support systems for drug prescribing and management: A decision-maker-researcher partnership systematic review

Study

Methods score

Indication

No. of centres/providers/patients

Process of care outcomes

CCDSS Effecta

Patient outcomes

CCDSS Effecta

Studies of drug-only interventions

Field, 2009[17, 24]

7

Alerts to promote appropriate drug prescribing and monitoring for patients with renal insufficiency in long-term care.

1*/10/833

Appropriate final drug orders.

0

...

...

Fortuna, 2009[18]

10

Alerts to consider cost when prescribing hypnotics for adults in primary and urgent care.

14*/257/...

Change in hypnotic drug prescriptions.

+

...

...

Lo, 2009[20]

10

Alerts to order laboratory tests when prescribing new medications in primary care.

22*/366/2765

Ordering appropriate baseline laboratory tests.

0

...

...

Terrell, 2009[23]

9

Alerts to avoid inappropriate prescriptions in geriatric outpatients during discharge from emergency care.

1/63*/5,162

Emergency department visits resulting in prescriptions for ≥1 of the 9 targeted inappropriate medications.

+

...

...

Gurwitz, 2008[25]

7

Alerts to prevent adverse drug events in long-term care.

2*/37/1,118

...

...

Adverse drug events.

0

Hicks, 2008[26]

7

Reminders for management of hypertension in adults in primary care.

14*/.../2,027

Visits with adherence to guideline medication prescribing within one week.

+

BP controlled.

0

Matheny, 2008[28]

8

Reminders for routine medication laboratory monitoring in primary care.

20*/303/1,922

Ordering appropriate laboratory tests.

0

...

...

Reeve, 2008[30]

8

Reminders for use of aspirin in diabetic adults in primary care.

52*/150/258,979

Number of aspirin interventions in diabetic patients.

+

...

...

Davis, 2007[32]

9

Alerts for appropriate prescribing for upper respiratory tract infections in paediatric outpatients.

2/44*/12,195

Prescriptions consistent with recommendations.

+

...

...

Heidenreich, 2007[33]

7

Reminders to prescribe β-blockers for inpatients and outpatients with reduced LVEF.

3/50/1,546*

Patients with prescriptions for any β-blocker over nine months.

+

Survival free of heart failure hospitalization at one year.

0

Martens, 2007[34, 46]

9

Reminders for prescribing of antibiotics and drugs for asthma, COPD, and dyslipidaemia.

23*/53/3,496

Sum scores for appropriate prescribing of antibiotics, statins, cholesterol-lowering drugs or drugs for asthma or COPD.

0

...

...

Peterson, 2007[35]

4

Dosing advice for high-risk drugs in geriatric patients in a tertiary care academic health centre.

1/778/2,981*

Ratio of overall prescribed to recommended doses.

+

...

...

Raebel, 2007a[37]

8

Alerts to review potentially inappropriate prescriptions in ambulatory geriatric patients.

21/.../59,680*

Dispensings of targeted potentially inappropriate medications.

+

...

...

Raebel, 2007b[36]

7

Alerts to avoid teratogenic drugs in pregnant ambulatory patients.

.../.../11,100*

Dispensed category D or X drugs.

+

...

...

Thomson, 2007[38]

8

Presented information for treatment decisions about warfarin or aspirin therapy for patients with atrial fibrillation in primary care.

2/2/109*

Difference in decision conflict scale score immediately post-clinic.

+

Admission to hospital; adverse events including transient ischemic attack, bleeding or stroke followed by general practitioner consultation or admission; patient anxiety.

0

Verstappen, 2007[39]

6

Management of methotrexate for early rheumatoid arthritis in adult outpatients.

6/.../299*

...

...

Patients in remission for ≥3 months in first two years.

+

Feldstein, 2006a[22, 41]

10

Alerts to order laboratory tests when prescribing new medications in primary care.

15*/200/961

Baseline laboratory monitoring completed by day 25.

+

...

...

Judge, 2006[42]

8

Alerts to avoid inappropriate prescriptions in long-term care.

1*/27/445

Appropriate prescriber response to alerts.

0

...

...

Kattan, 2006[43]

8

Feedback provided for management of drug therapy for severe asthma in paediatric outpatients.

.../435/937*

Time to compliance with recommended therapy step; visits resulting in medication step-up after step-up recommendation.

+

Maximum symptom days per two weeks.

0

Palen, 2006[47]

9

Reminders for laboratory monitoring based on medication orders in primary care.

16/207*/26,586

Overall compliance with ordering the recommended laboratory monitoring.

0

...

...

Paul, 2006[48]

10

Recommendations for empiric antibiotic treatment in hospital inpatients.

15*/.../2,326

Overall rate of appropriate antibiotic treatment.

+

Duration of hospital stay or fever; 30-day mortality.

0

Derose, 2005[50]

7

Reminders to prescribe ACE-Is, angiotensin receptor blockers and/or statins in outpatients with diabetes or atherosclerosis.

.../1089/8,557*

Patients with prescriptions for at least one of ACE-I, angiotensin receptor blocker, or statin.

+

...

...

Heidenreich, 2005[51]

6

Reminders to prescribe ACE-I or alternative for inpatients and outpatients with reduced LVEF.

1/.../600*

Patients with prescriptions for ≥ moderate daily dose of ACE-I or appropriate alternative.

0

Mortality; renal function; creatinine; systolic BP; diastolic BP.

0

Raebel, 2005[54]

8

Alerts to order laboratory tests when prescribing new medications in primary care.

.../.../400,000*

Laboratory test completed at time prescription is dispensed.

+

...

...

Krall, 2004[58]

8

Alerts to prescribe of low dose aspirin therapy in primary care.

.../100*/10,972

Provider response to alerts (prescribe aspirin or document contraindication).

+

...

...

Ansari, 2003[61]

7

Alerts to prescribe β-blockers for patients with heart failure in primary care.

1/74*/169

Initiated or uptitrated and maintained on β-blockers; patients at target β-blocker dose.

0

Proportion of patients hospitalised or with emergency department visits; deaths.

0

Filippi, 2003[62]

7

Reminders to prescribe acetylsalicylic acid or other antiplatelet agents to diabetic primary care patients.

.../300*/15,343

Antiplatelet drug prescription.

+

...

...

Tamblyn, 2003[65]

7

Alerts to avoid inappropriate prescriptions in geriatric outpatients.

.../107*/12,560

Proportion of new inappropriate prescriptions; discontinuation of pre-existing inappropriate prescriptions.

+

...

...

Weir, 2003[67]

8

Recommendations for appropriate prescribing of anti-platelet and/or anti-coagulant drugs following stroke or transient ischemic attack for in- and out-patients

16*/.../1,952

Number of optimal treatments provided and rank of therapy prescribed.

0

Reduction in ischemic and haemorrhagic vascular events.

0

Zanetti, 2003[68]

8

Alert to redose prophylactic antibiotics during prolonged cardiac surgery.

1/.../447*

Intraoperative redose of antibiotics.

+

Surgical-site infection.

0

Christakis, 2001[73]

5

Recommendations for appropriate prescribing of antibiotics for otitis media in paediatric outpatients.

1/38*/488

Antibiotics prescribed for <10 days.

+

...

...

Rossi, 1997[81]

9

Reminders to modify drug therapy in hypertensive outpatients receiving calcium channel blockers as initial therapy.

1/71/719*

Prescription changes from a calcium channel blocker to another antihypertensive agent.

+

...

...

Rotman, 1996[83]

7

Alerts to prescribe lowest cost drug alternative for adult outpatients.

1/37*/...

Rate of clinically relevant drug interactions.

0

...

...

McDonald, 1980[87]

5

Detection and management of medication-related problems in outpatients.

1/31*/...

Response rate for reminders over five weeks.

+

...

...

Coe, 1977[88]

4

Recommendations for medication management of hypertension in patients attending hypertension clinics.

2/.../116*

...

...

Adequate BP control achieved.

0

McDonald, 1976[89]

2

Recommendations for laboratory tests to detect potential medication-related events in adults attending a diabetes clinic.

1/.../226*

Ordered required tests to monitor drug effects; appropriate response to abnormal measures.

+

...

...

Studies of multi-faceted interventions

Bertoni, 2009[16, 21]

9

Recommendations for screening and treatment of dyslipidaemia in primary care.

59*/.../3,821

Patients with appropriate lipid management at follow-up.

+

...

...

Gilutz, 2009[19]

7

Reminders for monitoring and treatment of dyslipidaemia in primary care patients with known coronary artery disease.

112*/600/7,448

Appropriate initiation, up-titration, or continuation of statin therapy; adequate lipoprotein monitoring.

+

Change in low-density lipoprotein level.

+

Javitt, 2008[27]

6

Patient-specific recommendations for detecting and correcting medical errors in a health maintenance organization setting.

1/1378/49,988*

Resolution for problems identified by care considerations by adding or stopping a drug.

+

...

...

Quinn, 2008[29]

6

Recommendations for management of type 2 diabetes in primary care using remote glucose monitoring.

3/26/30*

Medications intensified; Medication errors identified.

+

Change in HbA1c levels.

+

Van Wyk, 2008[31]

10

On-demand and automatic alerts to screen and treat dyslipidaemia in primary care.

38*/80/92,054

Patients requiring treatment were treated.

Auto, +

On-demand, 0

...

...

Feldstein, 2006b[40]

8

Reminders for monitoring and treatment of osteoporosis care in high-risk women in primary care who experienced a fracture.

15/159/311*

Received only osteoporosis medication within 6 months of study start.

+

...

...

Kuilboer, 2006[44]

10

Recommendations for monitoring and treatment of asthma and COPD in primary care.

32*/40/156,772

Number of prescriptions for respiratory drugs.

0

...

...

Lester, 2006[45, 59]

8

Recommendations for the management of dyslipidaemia in primary care.

1/14/235*

Change in statin prescriptions at 1 and 12 months.

+

Change in low-density lipoprotein levels.

0

Cobos, 2005[49]

10

Recommendations for treatment, monitoring and follow-up for patients with dyslipidaemia in primary care.

42*/.../2,221

Assessed AST/ALT measurements or creatine kinase determinations; use of lipid-lowering drugs in patients with CHD or those without CHD and at high-risk or low-risk.

0

Successful management of cardiovascular risk.

0

Javitt, 2005[52]

6

Recommendations for management of patients whose care deviates from recommended practices in primary care.

.../.../39,462*

Compliance with recommendations to add or discontinue a medication.

+

Hospital admissions, inpatient days, and length of hospital stay.

+

Plaza, 2005[53]

9

Recommendations for cost-effective management of asthma in primary care.

.../20*/198

Prescriptions of oral glucocorticoids

+

St. George Respiratory Questionnaire total score.

+

Sequist, 2005[55]

6

Reminders for management of diabetes and coronary artery disease in primary care.

20*/194/6,243

Receipt of recommended drugs in diabetes (statins, ACE-Is in hypertension) or coronary artery disease (including aspirin, β-blocker or statin use).

0

...

...

Tierney, 2005[56]

9

Recommendations for the management of asthma and chronic obstructive pulmonary disease in adults in primary care.

4/266*/706

Suggestions adhered to for starting, modifying or stopping bronchodilators; medication compliance; patient satisfaction with physicians and pharmacists.

0

SF-36 subscale scores; McMaster Asthma Quality of Life and Chronic Respiratory Disease Questionnaires overall scores; emergency department visits; hospitalizations.

0

Wolfenden, 2005[57]

7

Reminders to provide smoking cessation interventions to patients attending non-cardiac pre-operative clinic.

1/18/210*

Preoperative nicotine replacement therapy offered or prescribed.

+

...

...

Murray, 2004[60]

5

Recommendations for treatment of hypertension in primary care.

4/...*/712

Compliance with all antihypertensive drug suggestions; patient satisfaction.

0

Overall composite quality of life score.

0

Tierney, 2003[66]

10

Recommendations for management of heart disease in primary care.

4*/115/706

Adherence with care suggestions to start low-dose aspirin or antihyperlipidemic drugs, or start or increase an ACE-Is, β-blockers, diuretics, long-acting nitrates, or calcium blockers.

0

Quality of life (score SF-36) at 12 months; quality of life (Chronic heart disease questionnaire overall health status).

0

Eccles, 2002[64, 69]

10

Recommendations for management of asthma or angina in adults in primary care.

62*/.../4,506

Prescription of β-blockers for angina patients.

0

(angina group)

Overall and disease-specific quality of life for angina patients.

0

(angina group)

Flottorp, 2002[63, 70]

9

Recommendations for management of urinary tract infections in women or sore throat in primary care.

142*/.../...

Use of antibiotics for sore throat and urinary tract infections.

+

...

...

Lesourd, 2002[71]

5

Recommendations for hormonal ovarian stimulation for infertile women in a teaching hospital.

3/4/164*

...

...

Pregnancy rate.

0

Selker, 2002[72]

8

Recommendations for thrombolytic and other reperfusion therapy in acute myocardial infarction.

28/.../1,596*

Patients who had ST-segment elevation detected but did not have acute myocardial infarction, including those who received thrombolytic therapy and those who had contraindications; thrombolytic therapy prescribed within one hour of acute myocardial infarction.

0

Death, stroke, or thrombolysis-related bleeding events that required transfusion within 30 days follow-up.

0

Dexter, 2001[74]

10

Reminders for preventive therapies in hospital inpatients.

...*/202/3,416

Hospitalizations with an order for prophylactic heparin or aspirin at discharge (all patients and only eligible patients).

+

...

...

McCowan, 2001[75]

8

Recommendations and reminders for management of asthma in primary care.

...*/46/477

Received prescription for acute asthma exacerbations.

+

Acute exacerbation of asthma.

+

Demakis, 2000[76]

7

Reminders for screening, monitoring, and counselling in accordance with predefined standards of care in ambulatory care.

12*/275/12,989

Adherence to recommendations for international normalised ratio monitoring in warfarin users, anticoagulation in atrial fibrillation, β-blocker following myocardial infarction or change in non-steroidal anti-inflammatory drug therapy following gastrointestinal bleed.

0

...

...

Hetlevik, 1999[77–79]

8

Recommendations for diagnosis and management of hypertension, diabetes mellitus, and dyslipidaemia in primary care.

56*/56/3,273

...

...

For hypertension and diabetic patients, change at 21 months in systolic and diastolic BP, serum cholesterol, BMI, proportion of smokers,

CHD risk score (women or men), proportion of patients with cardiovascular inheritance, or HbA1c level (diabetic patients only).

0

Overhage, 1997[80]

8

Recommendations for corollary orders to prevent errors of omission for tests and treatments in general medicine inpatients.

1*/92/2,181

Pharmacist interventions with physicians for significant errors.

+

Days in hospital; maximum serum creatinine level during hospital stay.

0

Overhage, 1996[82]

10

Reminders to comply with 22 US Preventive Services Task Force preventive care measures for hospital inpatients.

1*/78/1,622

Compliance with preventive care guidelines for use of aspirin, oestrogen or calcium, ACE-Is, heparin prophylaxis, and β-blockers.

0

...

...

Tierney, 1993[84]

10

Alerts for drug allergies and drug-drug interactions, and options for cost-effective testing in inpatients.

6*/276/5,219

...

...

Length of hospital stay and resource use after discharge (outpatient visits and readmissions).

0

Mazzuca, 1990[85]

7

Reminders for the management of type 2 diabetes mellitus in outpatients.

4*/114/279

Initiation of oral hypoglycaemic therapy.

0

...

...

McAlister, 1986[86]

7

Recommendations for management of hypertension in primary care.

50/50*/2,231

Patients receiving treatment for hypertension.

0

Diastolic BP ≤90 mmHg on last visit; days with diastolic BP ≤90 mmHg; change in diastolic BP from baseline.

0

  1. Abbreviations: ACE-I = angiotensin converting enzyme inhibitor; BP = blood pressure; CCDSS = computerized clinical decision support system; CHD = coronary heart disease; COPD = chronic obstructive pulmonary disease; LVEF = left ventricular ejection fraction.
  2. *Unit of allocation.
  3. aOutcomes are evaluated for effect based on the following hierarchy, with an effect defined as ≥50% of relevant outcomes showing a statistically significant difference (2p < 0.05):
  4. 1. If a single primary outcome is reported, in which all components are applicable, this is the only outcome evaluated.
  5. 2. If >1 primary outcome is reported, the ≥50% rule applies and only the primary outcomes are evaluated.
  6. 3. If no primary outcomes are reported (or only some of the primary outcome components are relevant) but overall analyses are provided, the overall analyses are evaluated as primary outcomes. Subgroup analyses are not considered.
  7. 4. If no primary outcomes or overall analyses are reported, or only some components of the primary outcome are relevant for the application, any reported prespecified outcomes are evaluated.
  8. 5. If no clearly prespecified outcomes are reported, any available outcomes are considered.
  9. 6. If statistical comparisons are not reported and data are insufficient to conduct analyses, 'effect' is designated as not evaluated (...).