scholarly journals Memantine for prophylaxis of episodic migraine: a systematic review and meta-analysis

2020 ◽  
Author(s):  
Mark Willy Llapitan Mondia ◽  
Adrian Espiritu ◽  
Martha Lu Bolaños ◽  
Jr. A. Artemio
Keyword(s):  
Systematic Review ◽  
Observational Studies ◽  
Adverse Drug Events ◽  
Case Series ◽  
Nmda Antagonist ◽  
Primary Headache ◽  
Episodic Migraine ◽  
Open Label ◽  
Retrospective Case ◽  
Eligibility Criteria

Abstract Background Migraine is a common debilitating primary headache. Memantine is a non-competitive N-methyl D-aspartate (NMDA) antagonist that lowers neuronal excitability that could prevent migraine attacks.Objectives This study aimed to determine the efficacy and safety of memantine in patients experiencing episodic migraine attacks using a systematic review and meta-analysis.Methods We searched CENTRAL, MEDLINE, Scopus, Cochrane, LILACS, ClinicalTrials.gov, HERDIN and Google Scholar for relevant studies. Prespecified screening and eligibility criteria for inclusion were applied. Included studies underwent methodological quality assessment. Study design, patient characteristics, interventions given, and relevant outcomes were extracted and synthesized.Results This review included five relevant articles – 2 randomized controlled trials (RCT) and 3 observational studies (1 retrospective case-series, 2 prospective non-randomized open-label single arm trials). There were 109 patients included in the RCTs and 197 patients reported in the observational studies. Pooled data from the 2 RCTs showed that Memantine at 10mg/day decreased the monthly migraine days at 12 weeks compared to placebo with a mean difference of -1.58 [95% confidence interval (CI) -1.84, -1.32]. Observational studies also showed a decrease in migraine days per month with Memantine (5-20mg/day) after 12 weeks [95% CI]: -9.1 [-11, -7.23], -7.2 [-8.85, -5.55], and -4.9 [-6.29, -3.51]. There were no statistically significant adverse drug events (ADE) noted in patients treated with Memantine compared to placebo.Conclusion Memantine may be effective and well-tolerated as prophylaxis for episodic migraine.

scholarly journals Treatment of Tinnitus in Children—A Systematic Review

2021 ◽  
Vol 12 ◽  
Author(s):  
Max J. Dullaart ◽  
Marijn Kip ◽  
Adriana L. Smit ◽  
Inge Stegeman
Keyword(s):  
Systematic Review ◽  
Randomized Controlled Trials ◽  
Observational Studies ◽  
Case Reports ◽  
Case Series ◽  
Controlled Trials ◽  
Eligibility Criteria ◽  
Subjective Tinnitus ◽  
Randomized Controlled

Objectives: To systematically review studies on the effect of treatment of subjective tinnitus in children.Data Sources: We searched for studies in MEDLINE and EMBASE databases, after which additional studies were hand searched using Scopus databases. The methods are described in the study protocol, which has been registered in the PROSPERO register. PRISMA guidelines were followed in the reporting of this study.Eligibility Criteria: We considered for inclusion randomized controlled trials (RCTs), observational studies, case reports, and case series, with tinnitus as primary outcome in children (0–18 years old) with acute or chronic subjective tinnitus. We excluded studies in which both children and adults participated but outcomes were not specifically reported for children, as well as animal studies, studies with a non-original study design and studies about children with pulsatile or objective tinnitus.Data Selection: Two reviewers independently assessed studies for eligibility and quality, collected and extracted data. Statistical analyses were performed in case of homogeneous outcomes.Results: The search yielded a total of 4,447 studies. Of these, 147 eligible studies were selected. One case report and five observational studies met the eligibility criteria. Three studies applied counseling and (simplified-)TRT and reported improvement in tinnitus outcome in 68 out of 82 children after 3–6 months of treatment. Two studies used pharmacological treatments and reported improvement in 74 out of 86 patients after 10 days to 3 months of treatment. One study reported the outcome of biofeedback therapy, describing an improvement in tinnitus loudness and annoyance after 2 months of treatment.Conclusion: Due to the high risk of bias of the included studies, we cannot determine the effectiveness of the treatment of subjective tinnitus in children. Also, owing to brief follow-up periods, it is not possible to draw conclusions regarding long-term effects. Randomized controlled trials with longer follow-up periods are necessary to provide substantial evidence of the effects of therapies for children affected by tinnitus. https://www.crd.york.ac.uk/prospero/Systematic Review Registration:https://www.crd.york.ac.uk/prospero/, identifier [CRD42020178134].

scholarly journals Systematic Review of Outcome Measures Used in Observational Studies of Adults with Eosinophilic Esophagitis

2021 ◽  
pp. 1-25
Author(s):  
Alain M. Schoepfer ◽  
Camilla Schürmann ◽  
Sven Trelle ◽  
Marcel Zwahlen ◽  
Christopher Ma ◽  
...  
Keyword(s):  
Systematic Review ◽  
Outcome Measures ◽  
Eosinophilic Esophagitis ◽  
Observational Studies ◽  
Patient Reported Outcomes ◽  
Case Series ◽  
Open Label ◽  
Topical Corticosteroids ◽  
Therapeutic Trials ◽  
Patient Reported

<b><i>Background:</i></b> Over the last 20 years, diverse outcome measures have been used to evaluate the effectiveness of therapies for eosinophilic esophagitis (EoE). This systematic review aims to identify the readouts used in observational studies of topical corticosteroids, diet, and dilation in adult EoE patients. <b><i>Methods:</i></b> We searched MEDLINE and Embase for prospective and retrospective studies (cohorts/case series, randomized open-label, and case-control) evaluating the use of diets, dilation, and topical corticosteroids in adults with EoE. Two authors independently assessed the articles and extracted information about histologic, endoscopic, and patient-reported outcomes and tools used to assess treatment effects. <b><i>Results:</i></b> We included 69 studies that met inclusion criteria. EoE-associated endoscopic findings (assessed either as absence/presence or using Endoscopic Reference Score) were evaluated in 24/35, 11/17, and 9/17 studies of topical corticosteroids, diet, and dilation, respectively. Esophageal eosinophil density was recorded in 32/35, 17/17, and 11/17 studies of topical corticosteroids, diet, and dilation, respectively. Patient-reported outcomes were not uniformly used (only in 14, 8, and 3 studies of topical corticosteroids, diet, and dilation, respectively), and most tools were not validated for use in adults with EoE. <b><i>Conclusions:</i></b> Despite the lack of an agreed set of core outcomes that should be recorded and reported in studies in adult EoE patients, endoscopic EoE-associated findings and esophageal eosinophil density are commonly used to assess disease activity in observational studies. Standardization of outcomes and data supporting the use of outcomes are needed to facilitate interpretation of evidence, its synthesis, and comparisons of interventions in meta-analyses of therapeutic trials in adults with EoE.

scholarly journals Relative motion flexion splinting for the rehabilitation of flexor tendon repairs: A systematic review

Hand Therapy ◽  
2021 ◽  
pp. 175899832110175
Author(s):  
Lisa Newington ◽  
Rachel Ross ◽  
Julianne W Howell
Keyword(s):  
Systematic Review ◽  
Clinical Outcomes ◽  
Relative Motion ◽  
Flexor Tendon ◽  
Grey Literature ◽  
Case Series ◽  
Range Of Movement ◽  
Retrospective Case ◽  
Eligibility Criteria ◽  
Patient Reported

Introduction Relative motion splinting has been used successfully in the treatment of extensor tendon repairs and has recently been applied in flexor tendon rehabilitation. The purpose of this systematic review was to identify articles reporting use of relative motion flexion (RMF) splinting following flexor tendon repair and to examine indications for use and clinical outcomes. Methods Seven medical databases, four trials registries and three grey literature sources were systematically searched and screened against pre-specified eligibility criteria. Screening, data extraction and quality appraisal were independently performed by two reviewers. Results A total of 12 studies were identified, of which three met the review eligibility criteria: one retrospective case series; one cadaveric proof of concept study; and one ongoing prospective case series. The type of splint (including metacarpophalangeal joint position and available movement), exercise programme, and zone of tendon injury varied between studies. Both case series presented acceptable range of movement and grip strength outcomes. The prospective series reported one tendon rupture and two tenolysis procedures; the retrospective series reported no tendon ruptures or secondary surgeries. Discussion We found limited evidence supporting the use of RMF splinting in the rehabilitation of zones I-III flexor tendon repairs. Further prospective research with larger patient cohorts is required to assess the clinical outcomes, patient reported outcomes and safety of RMF splinting in comparison to other regimes. Application of the relative motion principles to flexor tendon splinting varied across the included studies, and we suggest an operational definition of relative motion in this context.

scholarly journals The Role of Minocycline in the Treatment of Nosocomial Infections Caused by Multidrug, Extensively Drug and Pandrug Resistant Acinetobacter baumannii: A Systematic Review of Clinical Evidence

2019 ◽  
Vol 7 (6) ◽  
pp. 159 ◽  
Author(s):  
Paraskevi Fragkou ◽  
Garyfallia Poulakou ◽  
Andromachi Blizou ◽  
Myrto Blizou ◽  
Vasiliki Rapti ◽  
...  
Keyword(s):  
Systematic Review ◽  
Acinetobacter Baumannii ◽  
Nosocomial Infections ◽  
Infection Type ◽  
Treatment Options ◽  
Case Series ◽  
Success Rates ◽  
Retrospective Case ◽  
Eligibility Criteria

Treatment options for multidrug resistant Acinetobacter baumannii strains (MDR-AB) are limited. Minocycline has been used alone or in combination in the treatment of infections associated with AB. A systematic review of the clinical use of minocycline in nosocomial infections associated with MDR-AB was performed according to the PRISMA-P guidelines. PubMed-Medline, Scopus and Web of Science TM databases were searched from their inception until March 2019. Additional Google Scholar free searches were performed. Out of 2990 articles, 10 clinical studies (9 retrospective case series and 1 prospective single center trial) met the eligibility criteria. In total, 223 out of 268 (83.2%) evaluated patients received a minocycline-based regimen; and 200 out of 218 (91.7%) patients with available data received minocycline as part of a combination antimicrobial regimen (most frequently colistin or carbapenems). Pneumonia was the most common infection type in the 268 cases (80.6% with 50.4% ventilator-associated pneumonia). The clinical and microbiological success rates following minocycline treatment were 72.6% and 60.2%, respectively. Mortality was 20.9% among 167 patients with relevant data. In this systematic review, minocycline demonstrated promising activity against MDR-AB isolates. This review sets the ground for further studies exploring the role of minocycline in the treatment of MDR-AB associated infections.

Same-Admission Microvascular Maxillofacial Ballistic Trauma Reconstruction Using Virtual Surgical Planning: A Case Series and Systematic Review

2021 ◽  
pp. 194338752110264
Author(s):  
Sean A. Knudson ◽  
Kristopher M. Day ◽  
Patrick Kelley ◽  
Pablo Padilla ◽  
Ian X. Collier ◽  
...  
Keyword(s):  
Systematic Review ◽  
Surgical Planning ◽  
Average Length ◽  
Case Series ◽  
Retrospective Case ◽  
Oral Nutrition ◽  
Microsurgical Reconstruction ◽  
Virtual Surgical Planning ◽  
And Function ◽  
Ballistic Trauma

Study Design: Retrospective case series; systematic review. Objective: It is unknown whether the use of virtual surgical planning (VSP) to facilitate same-admission microsurgical reconstruction of the mandible following acute maxillofacial ballistic trauma (MBT) is sufficient to achieve definitive reconstruction and functional occlusion. Methods: A single-center retrospective analysis was conducted for patients who underwent microsurgical reconstruction of the mandible using VSP after acute MBT. The PubMed/MEDLINE, Embase, ScienceDirect, and Scopus databases were systematically reviewed using blinded screening. Studies were evaluated via thematic analysis. Results: Five patients were treated by same-admission and microsurgical reconstruction of the mandible using VSP. We observed an average of 16.4 ± 9.1 days between initial presentation and reconstruction, an average length of stay of 51.6 ± 17.9 days, 6.2 ± 2.8 operations, and 1.6 ± 0.9 free flaps per patient. Four types and 8 total flaps were employed, most commonly the anterior lateral thigh flap (37.5%). Care yielded complete flap survival. Each patient experienced at least 1 minor complication. All patients achieved centric occlusion, oral nutrition, and an approximation of their baseline facial aesthetic. Follow up was 191.0 ± 183.9 weeks. Systematic review produced 8 articles that adhered to inclusion criteria. Consensus themes in the literature were found for clinical goal and function of VSP when practicing MBT reconstruction, yet disagreement was found surrounding optimal treatment timeline. Conclusions: Same-admission microsurgical reconstruction after MBT is safe and effective to re-establish mandibular form and function. VSP did not delay reconstruction, given the need for preparation prior to definitive reconstruction.

scholarly journals Outcomes Following Primary Realignment Versus Suprapubic Cystostomy with Delayed Urethroplasty for Pelvic Fracture-Associated Posterior Urethral Injury: A Systematic Review with Meta-Analysis

2019 ◽  
Vol 13 (3) ◽  
pp. 113-124 ◽  
Author(s):  
Alexander Light ◽  
Tanya Gupta ◽  
Maria Dadabhoy ◽  
Allen Daniel ◽  
Madura Nandakumar ◽  
...  
Keyword(s):  
Systematic Review ◽  
Urinary Incontinence ◽  
Case Studies ◽  
Pelvic Fracture ◽  
Meta Analysis ◽  
Urethral Injury ◽  
Retrospective Case ◽  
Eligibility Criteria ◽  
High Quality Research ◽  
Suprapubic Cystostomy

Objective: Pelvic fracture can be complicated by posterior urethral injury (PUI) in up to 25% of cases. PUI can produce considerable morbidity, including urethral stricture, erectile dysfunction (ED), and urinary incontinence. Optimal management of PUI is unclear, however, the current gold standard is placement of a suprapubic cystostomy with delayed urethroplasty (SCDU) performed several months later. Another option is early primary realignment (PR) with urethral catheter, performed either open or endoscopically. Through a systematic review and meta-analysis, we aimed to compare PR and SCDU regarding stricture, ED, and urinary incontinence rates. In light of advancing endoscopic techniques, we also aimed to compare early endoscopic realignment (EER) alone with SCDU. Methods: PubMed, Medline, and Embase were searched for eligible studies comparing PR, including EER, and suprapubic cystostomy plus delayed urethroplasty from database inception until July 17th, 2018. We also reviewed reference lists from relevant articles. Study quality assessment was conducted using a modified Newcastle-Ottawa (mNOS) scale (maximum score 9). Results: From 461 identified articles, 13 studies encompassing 414 PR and 308 SCDU patients met our eligibility criteria. Twelve studies were retrospective non-randomized case studies, with 1 prospective randomized case study. Included studies were of moderately low quality (mNOS mean score: 6.0 ± 0.6). Meta-analysis demonstrated that PR and SCDU had similar stricture rates [odds ratio (OR): 2.14; 95% confidence interval (CI): 0.67-6.85; p = 0.20], similar rates of ED (OR: 1.06; 95% CI: 0.62-1.81; p = 0.84), and similar rates of urinary incontinence (OR: 0.94; 95% CI: 0.49-1.79; p = 0.86). Six studies compared EER alone (229 patients) versus SCDU (195 patients). Meta-analysis demonstrated that these modalities also had similar stricture rates (OR: 4.14; 95% CI: 0.76-22.45; p = 0.10), similar rates of ED (OR: 0.79; 95% CI: 0.41-1.54; p = 0.49), and similar rates of urinary incontinence (OR: 1.10; 95% CI: 0.48-2.53; p = 0.82). Conclusion: For PUI patients, neither PR nor EER produces superior outcomes compared to SCDU regarding stricture, ED, and urinary incontinence rates. The quality of studies in the literature, however, is very poor, with the majority of studies being non-randomized retrospective case studies with potentially high bias. Additional high-quality research, particularly prospective studies and randomized controlled trials, are needed to strengthen the evidence base.

scholarly journals Polysulfonate Resins in Hyperkalemia: A Systematic Review

2020 ◽  
Vol 7 ◽  
pp. 205435812096583
Author(s):  
Sheung Wing Sherwin Wong ◽  
Grace Zhang ◽  
Patrick Norman ◽  
Hasitha Welihinda ◽  
Don Thiwanka Wijeratne
Keyword(s):  
Systematic Review ◽  
Serum Potassium ◽  
Observational Studies ◽  
Primary Outcome ◽  
Case Series ◽  
Sodium Polystyrene Sulfonate ◽  
Polystyrene Sulfonate ◽  
High Quality ◽  
High Quality Evidence ◽  
Quality Evidence

Background: Hyperkalemia is a potentially life-threatening electrolyte abnormality defined as a serum potassium above the lab reference range (usually >5.0-5.5 mEq/L). Polystyrene resins, including sodium polystyrene sulfonate (SPS) and calcium polystyrene sulfonate (CPS), have long been used to treat hyperkalemia. Sodium polystyrene sulfonate/calcium polystyrene sulfonate act by exchanging a cation for potassium within the intestinal lumen. While SPS and CPS have been available since the 1960s, there are rising concerns about the validity of the data supporting its use and about serious adverse gastrointestinal effects. Objective: The objective of this systematic review was to quantify the efficacy and safety of polystyrene sulfonate resins (SPS/CPS) in the treatment of adults with hyperkalemia. This review focuses on the randomized control trial (RCT), interventional non-RCT, and observational data available on SPS/CPS use. Design: Systematic review. Setting: Any country of origin. Both inpatient and outpatient settings. Patients: Adults with hyperkalemia treated with polystyrene sulfonate resins. Measurements: The primary outcome was change in serum potassium. The secondary outcomes included adverse effects of SPS/CPS and prevention of recurrent hyperkalemia. Methods: We conducted a systematic review using Cochrane Library, EMBASE (1947-2019), and Medline (1946-2019) databases. Literature reviews, systematic reviews, case studies, case series, and editorial pieces were excluded. Included studies were assessed for risk of bias. Results: Four RCTs, 21 observational studies, and 5 quasi-experimental trials were included. A total of 212 351 patients were included. Two thousand and fifty-eight patients were studied for the primary outcome and 210 293 patients were studied for the secondary outcomes. Study designs were heterogeneous and not amenable to meta-analysis. Most studies included nonhemodialysis outpatients older than 65 years. Of the included studies, 22/25 (88%) demonstrated a reduction of serum potassium >0.5 mEq/L over the study period. The magnitude of reduction in serum potassium of potassium resin compared with placebo or matched controls in the 3 low-risk studies identified was 0.14 to 1.04 mEq/L. However, each study used different dosing regimens. Ten of 22 studies reported the effects of polystyrene resins on serum potassium within 24 hours. A few high-quality observational studies suggest an increased risk of serious adverse gastrointestinal events with a relative risk of 2.10 and a hazard ratio of 1.25 to 1.94; however, the absolute risk remains low. The incidence of adverse gastrointestinal events is 16 to 23 events per 1000 person-years. Limitations: We acknowledge several limitations in this study. Case studies and case series were excluded from the search results. Large case series may have been excluded despite having comparable sample sizes to studies included due to lack of a comparator and calculated estimates. Due to the heterogeneity of the studies, the data were unable to be meta-analyzed and as such the potassium-lowering effect of polystyrene sulfonate resins remains founded on small studies with potential confounders. Conclusions: This systematic review demonstrates a continued lack of high-quality evidence for the use of SPS/CPS in hyperkalemia. Studies investigated highly variable timelines and the most robust evidence for SPS/CPS use is in chronic hyperkalemia. While the absence of high-quality evidence does not exclude the possibility of benefit, prescribers must understand that the use of SPS/CPS in acute hyperkalemia is not supported by high-quality evidence. Trial registration: The protocol for this systematic review was not registered.

scholarly journals Efficacy of nicotine administration on obsessions and compulsions in OCD: a systematic review

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Daria Piacentino ◽  
Annalisa Maraone ◽  
Valentina Roselli ◽  
Isabella Berardelli ◽  
Massimo Biondi ◽  
...  
Keyword(s):  
Systematic Review ◽  
Ethical Issues ◽  
Case Reports ◽  
Treatment Strategies ◽  
Case Series ◽  
Symptom Improvement ◽  
Open Label ◽  
Cross Sectional ◽  
Positive Effects ◽  
Nicotine Administration

Abstract Background Preliminary studies have tested nicotine as a novel treatment for OCD patients who respond partially/incompletely or not at all to first and second-line treatment strategies, with the former represented by SSRIs or clomipramine, and the latter by switching to another SSRI, or augmentation with atypical antipsychotics, and/or combination with/switching to cognitive–behavioural therapy. Some studies found nicotine-induced reduction of obsessive thoughts and/or compulsive behaviour in OCD patients. We aimed to evaluate the efficacy of nicotine administration in OCD patients. Methods We searched the PubMed, ScienceDirect Scopus, CINHAL, Cochrane, PsycINFO/PsycARTICLES, and EMBASE databases from inception to the present for relevant papers. The ‘Preferred Reporting Items for Systematic Review and Meta-Analyses’ (PRISMA) standards were used. We included all studies focusing on the effects of nicotine administration on OCD patients’ obsessions or compulsions. Studies could be open-label, cross-sectional, randomized controlled trials, case series or case reports. Results A total of five studies could be included. Nicotine administration may ameliorate behavioural features and recurrent thoughts of severe, treatment-resistant OCD patients; however, in one study it was not associated with OC symptom improvement or cognitive enhancement across various executive function subdomains. Conclusions Although encouraging, the initial positive response from the use of nicotine in OCD needs testing in large controlled studies. This, however, raises ethical issues related to nicotine administration, due to its addiction potential, which were not addressed in the limited literature we examined. As an alternative, novel treatments with drugs able to mimic only the positive effects of nicotine could be implemented.

scholarly journals Social support and depression among community dwelling older adults in Asia: a systematic review

BMJ Open ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. e026667 ◽  
Author(s):  
Tengku Amatullah Madeehah Tengku Mohd ◽  
Raudah Mohd Yunus ◽  
Farizah Hairi ◽  
Noran N Hairi ◽  
Wan Yuen Choo
Keyword(s):  
Social Support ◽  
Systematic Review ◽  
Older Adults ◽  
Observational Studies ◽  
Community Dwelling ◽  
Eligibility Criteria ◽  
Cross Sectional ◽  
Support Measures ◽  
Received Social Support ◽  
Community Dwelling Older Adults

ObjectivesThis review aims to: (1) explore the social support measures in studies examining the association between social support and depression among community-dwelling older adults in Asia and (2) the evidence of association.DesignA systematic review was conducted using electronic databases of CINAHL, PubMed, PsychINFO, Psychology and Behavioural Sciences Collection, SocINDEX and Web of Science for articles published until the 11th of January 2018.Eligibility criteriaAll observational studies investigating the association between social support and depression among community-dwelling older adults in Asia were included.ParticipantsOlder adults aged 60 years and more who are living in the community.Exposure measuresSocial support.Outcome measuresDepression.ResultsWe retrieved16 356 records and screened 66 full-text articles. Twenty-four observational studies were included in the review. They consisted of five cohort studies and 19 cross-sectional studies. Social support was found to be measured by multiple components, most commonly through a combination of structural and functional constructs. Perceived social support is more commonly measured compared with received social support. Good overall social support, having a spouse or partner, living with family, having a large social network, having more contact with family and friends, having emotional and instrumental support, good support from family and satisfaction with social support are associated with less depressive symptoms among community-dwelling older adults in Asia.ConclusionsThere were 20 different social support measures and we applied a framework to allow for better comparability. Our findings emphasised the association between good social support and decrease depression among older adults. Compared with western populations, family support has a greater influence on depression among community-dwelling older adults in Asia. This indicates that the family institution needs to be incorporated into designed programmes and interventions when addressing depression in the Asian context.Trialregistration numberCRD42017074897.

scholarly journals The impact of decision aids in patients with colorectal cancer: a systematic review

BMJ Open ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. e028379 ◽  
Author(s):  
Jenaya Goldwag ◽  
Priscilla Marsicovetere ◽  
Peter Scalia ◽  
Heather A Johnson ◽  
Marie-Anne Durand ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Systematic Review ◽  
Cancer Treatment ◽  
Data Extraction ◽  
Decision Aids ◽  
Case Series ◽  
Cochrane Library ◽  
Eligibility Criteria ◽  
The Impact ◽  
Colorectal Cancer Treatment

ObjectivesOur aim was to conduct a systematic review of the literature to determine the impact of patient decision aids (PDA) on patients facing treatment decisions for colorectal cancer.DesignSystematic review.Data sourcesSources included Embase, Medline, Web of Science, CINAHL and the Cochrane Library from inception to June, 20, 2019.Eligibility criteriaWe included randomised controlled trials (RCTs), cohort studies, mixed methods and case series in which a PDA for colorectal cancer treatment was used. Qualitative studies were excluded from our review.Data extraction and synthesisFollowing execution of the search strategy by a medical librarian, two blinded independent reviewers identified articles for inclusion. Two blinded reviewers were also responsible for data extraction, risk of bias and study quality assessments. Any conflict in article inclusion or extraction was resolved by discussion.ResultsOut of 3773 articles identified, three met our inclusion criteria: one RCT, one before-and-after study and one mixed-method study. In these studies, the use of a PDA for colorectal cancer treatment was associated with increased patient knowledge, satisfaction and preparation for making a decision. On quality assessment, two of three studies were judged to be of low quality.ConclusionA paucity of evidence exists on the effect of PDA for colorectal cancer treatment with existing evidence being largely of low quality. Further investigation is required to determine the effect of decision aids for colorectal cancer treatment as well as reasons for the lack of PDA development and implementation in this area.Prospero registration numberCRD42018095153.

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