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Failure-mode index

Search what already failed

A searchable index of real negative results, null findings, and replication failures from the published literature — so you can learn what didn't work before repeating it.

WASTE indexes published research — it does not host or republish full papers. Each entry is a metadata record (title, authors, DOI) compiled from open scholarly databases, with the abstract shown in full only where the paper is openly licensed (e.g. Creative Commons); otherwise a short excerpt is shown for reference under fair use. WASTE classifies each work by failure type; classifications are automated and approximate.

466 results in Negative / Null Result Report for "randomized controlled trial" · page 4 of 16

Negative / Null Result Report

Abstract 13428: The Long-term Therapy With Low-dose Aspirin Did Not Reduce Cardiovascular Events in Patients With Type 2 Diabetes in Primary Prevention Setting: 10-year Follow-up of a Randomized Controlled Trial

Yoshihiko Saito, Sadanori Okada, Hisao Ogawa et al. · 2016 · Circulation

Introduction: It takes long time to conclude efficacy and safety of an intervention on primary prevention of cardiovascular events. Up to date, there is no study to investigate the effect of the low-dose aspirin therapy on primary…

View details →DOI: 10.1161/circ.134.suppl_1.13428
Negative / Null Result Report

Engaging Education About Risks of Opioid Use With Patients Before Elective Surgery of the Lower Extremity Did Not Reduce Postoperative Opioid Utilization: A Randomized Controlled Trial

Daniel I. Rhon, Tina A. Greenlee, Rachel Mayhew et al. · 2022 · Journal of the American Academy of Orthopaedic Surgeons

Introduction: After elective orthopaedic surgery, many individuals go on to become long-term opioid users. Mitigating this risk has become a priority for surgeons, other members of the medical care team, and healthcare systems. The purpose…

View details →DOI: 10.5435/jaaos-d-21-00603
Negative / Null Result ReportOpen accessComputer applications to medicine. Medical informatics

A Brief Intervention to Increase Uptake and Adherence of an Internet-Based Program for Depression and Anxiety (Enhancing Engagement With Psychosocial Interventions): Randomized Controlled Trial

Philip J Batterham, Alison L Calear, Matthew Sunderland et al. · 2021 · Journal of Medical Internet Research

BackgroundPsychosocial, self-guided, internet-based programs are effective in treating depression and anxiety. However, the community uptake of these programs is poor. Recent approaches to increasing engagement (defined as both uptake and adherence) in internet-based programs include brief engagement facilitation interventions (EFIs). However, these programs require evaluation to assess their efficacy. ObjectiveThe aims of this hybrid implementation effectiveness trial are to examine the effects of a brief internet-based EFI presented before an internet-based cognitive behavioral therapy self-

View details →DOI: 10.2196/23029
Negative / Null Result ReportOpen accessMedicine

Cluster Randomized Controlled Trial Evaluation of a Gender Equity and Family Planning Intervention for Married Men and Couples in Rural India.

Anita Raj, Mohan Ghule, Julie Ritter et al. · 2016 · PLoS ONE

Background Despite ongoing recommendations to increase male engagement and gender-equity (GE) counseling in family planning (FP) services, few such programs have been implemented and rigorously evaluated. This study evaluates the impact of CHARM, a three-session GE+FP counseling intervention delivered by male health care providers to married men, alone (sessions 1&2) and with their wives (session 3) in India. Methods and findings A two-armed cluster randomized controlled trial was conducted with young married couples (N = 1081 couples) recruited from 50 geographic clusters (25 clusters randomi

View details →DOI: 10.1371/journal.pone.0153190
Negative / Null Result ReportOpen accessGeriatrics

Safer cycling in older age (SiFAr): effects of a multi-component cycle training. a randomized controlled trial

Veronika Keppner, Sebastian Krumpoch, Robert Kob et al. · 2023 · BMC Geriatrics

Abstract Background The risk of older adults being injured or killed in a bicycle accident increases significantly due to the age-related decline of physical function. Therefore, targeted interventions for older adults to improve safe cycling competence (CC) are urgently needed. Methods The “Safer Cycling in Older Age” (SiFAr) randomized controlled trial investigated if a progressive multi-component training program related to cycling improves CC of older adults. Between June 2020 and May 2022, 127 community-dwelling persons living in the area Nürnberg-Fürth-Erlangen, Germany aged 65 years and

View details →DOI: 10.1186/s12877-023-03816-2
Negative / Null Result ReportOpen accessNeurosciences. Biological psychiatry. Neuropsychiatry

Effects of simvastatin on white matter integrity in healthy middle‐aged adults

Nicholas M. Vogt, Jack F. V. Hunt, Yue Ma et al. · 2021 · Annals of Clinical and Translational Neurology

Abstract Background The brain is the most cholesterol‐rich organ and myelin contains 70% of total brain cholesterol. Statins are potent cholesterol‐lowing medications used by millions of adults for prevention of vascular disease, yet the effect of statins on cholesterol‐rich brain white matter (WM) is largely unknown. Methods We used longitudinal neuroimaging data acquired from 73 healthy, cognitively unimpaired, statin‐naïve, middle‐aged adults during an 18‐month randomized controlled trial of simvastatin 40 mg daily (n = 35) or matching placebo (n = 38). ANCOVA models (covariates: age, sex,

View details →DOI: 10.1002/acn3.51421
Negative / Null Result ReportOpen accessMedicine (General)

Effect of High-Intensity Focused Ultrasound on sleep quality measures in obese doubled chin women: a randomized controlled trial

Nahla Tharwat Moussa Ahmed, Hany Ezzat Obaya, Azza Abd Elaziz Abd Elhadi et al. · 2025 · Вестник восстановительной медицины

INTRODUCTION. The double chin is an excessive accumulation of fat in the pre- and post-platysma that can manifest in various forms and sizes. Thin individuals might manifest a double chin, similar to those who are afflicted by obesity. It may result in a reduction in the definition of the mandible and give the perception of obesity or aging. AIM. To evaluate any effect of High-Intensity Focused Ultrasound (HIFU) on sleep quality measures in obese women with a double chin. MATERIALS AND METHODS. Typically, 60 women aged 35–50 years were selected from AL Qasr-Alaini Hospital and were equally div

View details →DOI: 10.38025/2078-1962-2025-24-1-47-54
Negative / Null Result ReportOpen accessMedicine

Reporting of patient-reported outcomes (PROs) in randomized controlled trials of anemia treatments for people with CKD: a scoping review.

Patel DM, Wilson RF, Gharibani T et al. · 2026 · Journal of patient-reported outcomes

BACKGROUND: Patient-reported outcomes (PROs) are key outcomes of importance for people with chronic kidney disease (CKD), and may be of even higher relevance for patients with concomitant anemia which can often be symptomatic. Thus, PROs…

View details →DOI: 10.1186/s41687-026-01007-2
Negative / Null Result ReportMedicine

Intermittent hemodialysis with regional citrate anticoagulation vs. priming heparin and pre-dilution HDF in patients at Risk Of Bleeding in Nephrology (the ROBIN randomized control trial).

Moranne O, Gerbal M, Chkair S et al. · 2026 · Blood purification

Introduction This single center randomized controlled trial (NCT03562754) compared pre-diluted IHDF (PIHDF) without systemic anticoagulation and the Prometheus system with regional citrate anticoagulation (IHD-RCA) in high-bleeding-risk…

View details →DOI: 10.1159/000552412
Negative / Null Result ReportMedicine

The effect of stress ball use on stress, sleep quality, and comfort in individuals receiving hemodialysis: a randomized controlled trial.

Kacaroglu Vicdan A, Gibyeli Genek D · 2026 · BMC complementary medicine and therapies

Background Hemodialysis often leads to various physiological, psychological, and social challenges for individuals receiving this treatment. This study was conducted to determine the effects of stress ball use on stress, sleep quality, and…

View details →DOI: 10.1186/s12906-026-05429-9
Negative / Null Result ReportOpen accessMedicine

Impact of Sensory Re-education Paradigm on Quality of Life, Tactile Sensation, and Proprioceptive Acuity in Patients with Post-COVID-19 Polyneuropathy: A Randomized Controlled Trial.

Alsaid HM, Khadour YA, Zakaria HM et al. · 2026 · Journal of musculoskeletal & neuronal interactions

Objectives This study evaluated the effect of sensory re-education on quality of life and sensation in patients with post-COVID-19 polyneuropathy. Methods Forty patients with post-COVID-19 polyneuropathy were randomly assigned to a study…

Negative / Null Result ReportMedicine

Comparison of 2% lidocaine with epinephrine and 4% articaine with epinephrine in local anesthesia of maxillary molars affected by molar incisor hypomineralization: a randomized controlled trial.

Haidar M, Raslan N · 2026 · Scientific reports

The use of local anesthesia is essential for pain control during the treatment of MIH-affected molars. This study aimed to compare injection-related pain and anesthetic efficacy between 2% lidocaine with epinephrine (LE) and 4% articaine…

View details →DOI: 10.1038/s41598-026-54698-4
Negative / Null Result ReportOpen accessMedicine

Dexmedetomidine for improving postpartum sleep quality following cesarean section in women: a randomized controlled trial.

Gao J, Hu CC, Wang XY et al. · 2026 · Frontiers in medicine

Background Perinatal sleep disturbance is highly prevalent among women undergoing elective cesarean section. Dexmedetomidine has been proven effective in improving sleep quality in patients undergoing general surgery, and this study aimed…

View details →DOI: 10.3389/fmed.2026.1823100
Negative / Null Result ReportOpen accessMedicine

Efficacy of mesotherapy in patients with acute and subacute neck pain: A randomized controlled trial.

Gonultas D, Kulcu DG, Kaymaz EP et al. · 2026 · Turkish journal of physical medicine and rehabilitation

Objectives This study aims to investigate the effectiveness of mesotherapy in patients with acute or subacute neck pain compared to oral medications with the same active ingredients. Patients and methods In this randomized, single-blind…

View details →DOI: 10.5606/tftrd.2025.16956
Negative / Null Result ReportOpen accessMedicine

Effectiveness of Acupressure on Anxiety, Fatigue, and Sleep Quality Among Operating Room Personnel: A Randomized Controlled Trial.

Abjar R, NasiriFormi E, Kazemi AH et al. · 2026 · Health science reports

Background and aims High-quality sleep, calmness, and lack of fatigue are vital for the health of critical hospital staff. Operating room personnel experience significant mental and physical stress, including anxiety and sleep…

View details →DOI: 10.1002/hsr2.72680
Negative / Null Result ReportOpen accessNeurosciences. Biological psychiatry. Neuropsychiatry

Repetitive temporal interference stimulation improves jump performance but not the postural stability in young healthy males: a randomized controlled trial

Suwang Zheng, Tianli Fu, Jinlong Yan et al. · 2024 · Journal of NeuroEngineering and Rehabilitation

Abstract Background Temporal interference (TI) stimulation, an innovative non-invasive brain stimulation technique, has the potential to activate neurons in deep brain regions. The objective of this study was to evaluate the effects of repetitive TI stimulation targeting the lower limb motor control area (i.e., the M1 leg area) on lower limb motor function in healthy individuals, which could provide evidence for further translational application of non-invasive deep brain stimulation. Methods In this randomized, double-blinded, parallel-controlled trial, 46 healthy male adults were randomly di

View details →DOI: 10.1186/s12984-024-01336-7
Negative / Null Result ReportOpen accessMedicine

Melody vs. message: Effects of traditional song and concise social media communications on iodine knowledge, attitudes, behaviors, and biomarkers in pregnant women-A randomized controlled trial.

Ruengsiriphakakul S, Bumrerraj S, Thaenkham T · 2026 · Journal of education and health promotion

Background Iodine deficiency remains a global public health problem. Urinary iodine concentration (UIC) in pregnant women is a key indicator of iodine status in the population. Knowledge (K), attitude (A), and practice (P) levels of…

View details →DOI: 10.4103/jehp.jehp_815_25
Negative / Null Result Report

Exploratory outcomes of the DHA WIN randomized controlled trial: Supplementing women with docosahexaenoic acid did not reduce the impact of neoadjuvant breast cancer chemotherapy on quality of life or exercise behaviour

Claire M. Douglas, Marnie Newell, Susan Goruk et al. · 2025 · PLOS One

Supplementation of omega-3 (n-3) polyunsaturated fatty acids has been associated with reduced side effects and improved quality of life (QoL) in breast cancer patients receiving chemotherapy. The current study reports secondary outcomes…

View details →DOI: 10.1371/journal.pone.0322178
Negative / Null Result ReportMedicine

The effect of podcasts delivered to female university students on HPV knowledge, awareness, and anxiety levels: A randomized controlled trial.

Çi̇men HN, Uğur S, Çıralı A et al. · 2026 · Nurse education in practice

Aim The aim of this study was to evaluate the effect of podcast-based educational content delivered to students on their knowledge, awareness and anxiety levels regarding Human Papillomavirus (HPV). Method This randomized controlled…

View details →DOI: 10.1016/j.nepr.2026.104902
Negative / Null Result ReportOpen accessDiseases of the genitourinary system. Urology

Effect of preoperative estrogen on complications after proximal hypospadias repair: A randomized controlled trial

Akash Bihari Pati, Pritinanada Mishra, Santosh K Mahalik et al. · 2023 · Indian Journal of Urology

Introduction: Proximal hypospadias repair has many postoperative complications such as urethrocutaneous fistulae, wound dehiscence, and urethral stricture. The beneficial effect of estrogen to promote wound healing has been known. We designed a study to determine whether preoperative stimulation of tissue with estrogen can reduce the postoperative complications associated with wound healing in patients undergoing hypospadias repair. Methods: Patients with proximal hypospadias requiring two-stage repairs (chordee correction followed by urethral tubularization) were randomized to estrogen and co

View details →DOI: 10.4103/iju.iju_387_22
Negative / Null Result ReportOpen accessMedicine

The Effect of the combination therapy of statin and dapagliflozin, a selective inhibitor of sodium_glucose Co-transporter type 2, in the treatment of Ischemic heart disease with heart failure: A randomized controlled trial.

Abdelkader AM, Osama H, Hassan ES et al. · 2026 · European journal of clinical pharmacology

Purpose Gliflozins (SGLT2 inhibitors) and statins are key treatments commonly used in patients with ischemic heart failure. Although both are well known for diminishing cardiovascular risk and heart failure-related mortality, the possible…

View details →DOI: 10.1007/s00228-026-04050-6
Negative / Null Result ReportMedicine

Effect of Vaginal Palpation on Voluntary Pelvic Floor Muscle Performance During Early Motor Learning in Women with Stress Urinary Incontinence (SUI): A Randomized Controlled Trial.

de Azevedo Ferreira, Fitz, Gimenez et al. · 2026 · International urogynecology journal

Seventy percent of women with pelvic floor muscle (PFM) dysfunction are unable to contract these muscles correctly. Instruction to contract properly is essential for effective PFM training (PFMT). The study aimed to compare two…

View details →DOI: 10.1007/s00192-026-06775-5
Negative / Null Result ReportMedicine

A randomized controlled trial comparing limbal-conjunctival autograft with conjunctival autograft in recurrent pterygium surgery with intraoperative application of 0.02% mitomycin C.

Peng, Wang, Gong et al. · 2026 · International ophthalmology

To compare the outcomes of conjunctival graft (CAG) versus limbal-conjunctival autograft (LCAG) in preventing recurrence after surgery for recurrent pterygium with intraoperative application of 0.02% mitomycin C(MMC). This prospective…

View details →DOI: 10.1007/s10792-026-04121-8
Negative / Null Result ReportOpen accessSports medicine

Safety and Effectiveness of a Perturbation-based Neuromuscular Training Program on Dynamic Balance in Adolescent Females: A Randomized Controlled Trial

Alison Bulow, Judith E Anderson, Jeff R S Leiter et al. · 2021 · International Journal of Sports Physical Therapy

# Background Adolescent females are at much greater risk for ACL injury than their male counterparts when participating in the same sports. Preventative and pre-operative rehabilitation neuromuscular (NM) exercise programs are often recommended to improve knee function and reduce injury rates. The effectiveness of perturbation-based NM training program has been established in an adult population but has yet to be investigated in the at-risk adolescent female population. # Purpose To determine the effectiveness of a perturbation-based NM exercise program in a group of physically active adolesce

View details →DOI: 10.26603/001c.25685
Negative / Null Result ReportMedicine

The impact of urinary catheterization on urinary tract infection and renal function in elderly patients undergoing hip fracture surgery: A prospective randomized controlled trial.

Serttas, Uysal, Deği̇rmenci̇ et al. · 2026 · Injury

Urinary tract infection(UTI) is a common complication following hip fracture surgery in elderly patients. Urinary catheterization is frequently used to improve patient comfort during prolonged preoperative immobilization; however, its…

View details →DOI: 10.1016/j.injury.2026.113449
Negative / Null Result ReportMedicine

Effect of crossword puzzle on nursing students' willingness to work with older adults and gerontological nursing competence: A waiting list randomized controlled trial.

Erdoğan, Ayaz-Alkaya · 2026 · Nurse education in practice

To evaluate the effect of crossword puzzle activities on nursing students' willingness to work with older adults and their competence in gerontological nursing. Although crossword puzzles are widely used learning tools, their effects in…

View details →DOI: 10.1016/j.nepr.2026.104844
Negative / Null Result ReportMedicine

Impact of Oxygen Targets on Sepsis Outcome: A Randomized Controlled Trial.

Chen X, Wen W, Zheng L · 2026 · Shock (Augusta, Ga.)

Background Sepsis is a clinical syndrome marked by a dysregulated host response to infection, impairing oxygen delivery and utilization and causing organ dysfunction. Hypoxemia, which can cause significant tissue and organ damage, commonly…

View details →DOI: 10.1097/shk.0000000000002865
Negative / Null Result ReportMedicine

Effects, Acceptability, and Use of a Dynamically Tailored Mobile What Do You Drink Intervention to Reduce Excessive Drinking Among Adolescents and Young Adults in the Netherlands: Randomized Controlled Trial.

van Keulen, Voogt, Kleinjan et al. · 2026 · JMIR mHealth and uHealth

Excessive alcohol consumption among adolescents and young adults is a serious health problem. Dynamically tailored interventions could reduce their excessive drinking. We therefore developed "What Do You Drink" (WDYD), a 17-week…

View details →DOI: 10.2196/68468
Negative / Null Result ReportMedicine

Effect of Meibomian Gland Expression on Meibomian Gland Regeneration and Function: A Randomized Controlled Trial.

Le, Chotikkakamthorn, Kasetsuwan et al. · 2026 · Clinical ophthalmology (Auckland, N.Z.)

This study aims to compare the effect of meibomian gland expression (MGX) combined with lid hygiene versus lid hygiene alone on the meibomian gland's morphology and function for obstructive meibomian gland dysfunction (oMGD). In this…

View details →DOI: 10.2147/opth.s607078