Selected factors associated with medical malpractice in health care system

1. Introduction

Medical malpractice — defined as professional negligence by a healthcare provider in which treatment provided falls below the accepted standard of practice and causes injury or death to the patient — represents one of the most serious challenges confronting modern healthcare systems. The global burden of adverse events attributable to medical error is substantial: the World Health Organization (WHO) estimates that unsafe care is among the top ten causes of death and disability in the world, with low- and middle-income countries disproportionately affected.

In the United States alone, the National Practitioner Data Bank (NPDB) recorded over 3,000 malpractice payments for wrongful death claims in 2022. Research from Johns Hopkins University estimates that nearly 800,000 Americans suffer permanent disability or death annually due to diagnostic errors alone, prompting calls to classify diagnostic mistakes as a public health crisis. The financial consequences are equally alarming: malpractice-related costs, insurance premiums, and defensive medical practices contribute an estimated $46 billion in excess healthcare expenditures each year.

Despite this burden, the literature on medical malpractice has historically been fragmented. Studies have examined individual specialties, specific error types, or regional healthcare settings in isolation, making it difficult to identify universal contributing factors and develop coherent prevention frameworks. Systematic reviews play a critical role in aggregating this dispersed evidence, identifying consistent patterns across heterogeneous populations and settings.

The present systematic review aims to address this gap by synthesizing evidence across multiple domains — patient, provider, and healthcare system — to identify the most consistently reported factors associated with medical malpractice. By examining studies from diverse national healthcare contexts, this review seeks to provide an evidence base that is globally relevant, while also identifying gaps in the current literature for future research.

1.1 Significance of the Review

Understanding the determinants of medical malpractice is important for multiple stakeholders. Clinicians and healthcare administrators can use this evidence to develop targeted risk management programs. Policymakers can design healthcare system reforms that address root causes rather than symptoms. Medical educators can integrate safety-oriented training into curricula. Patients and their families benefit from a healthcare environment in which preventable harm is systematically reduced.

Previous systematic reviews have predominantly focused on single specialties (e.g., obstetrics, surgery) or single error categories (e.g., diagnostic error, medication error). This review takes a broader perspective, examining factors across all levels of the healthcare system to produce a comprehensive, integrated framework of malpractice risk.

2. Methods

2.1 Study Design

This systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines. The review protocol was registered in the PROSPERO international prospective register of systematic reviews (Registration No.: CRD42020182045).

2.2 Eligibility Criteria

Studies were included if they met the following criteria:

• Published in peer-reviewed journals or as grey literature between January 2010 and December 2024

• Reported original data (quantitative, qualitative, or mixed methods) on factors associated with medical malpractice, negligence, or adverse outcomes

• Conducted in any healthcare setting (hospital, primary care, ambulatory clinic, long-term care)

• Available in English, Arabic, French, or Spanish

• Focused on adult or pediatric patient populations

Studies were excluded if they were: editorial commentaries without original data; case reports of single incidents without analytical comparison; focused exclusively on legal or insurance processes without clinical factors; or based on fictional or simulated data without empirical grounding.

2.3 Search Strategy

Electronic searches were performed in PubMed/MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), Scopus, and CINAHL from January 2010 to December 2024. Reference lists of included studies and relevant systematic reviews were hand-searched. Google Scholar was searched for grey literature. The following MeSH terms and free-text keywords were used: "medical malpractice", "medical negligence", "adverse events", "patient safety", "diagnostic error", "medication error", "surgical error", "communication failure", "clinical risk factors", "healthcare system", "physician performance", and "quality of care".

2.4 Study Selection and Data Extraction

Titles and abstracts were independently screened by two reviewers, with discrepancies resolved through consensus. Full texts of potentially eligible studies were retrieved and reviewed against inclusion criteria. Data extraction was performed using a standardized form capturing: study design, country, healthcare setting, sample size, malpractice definition, factors examined, key findings, and limitations.

2.5 Quality Appraisal

Quality appraisal was conducted using the Newcastle-Ottawa Scale (NOS) for observational studies, the Cochrane Risk of Bias tool for randomized designs, and the Mixed Methods Appraisal Tool (MMAT) for mixed-methods studies. Studies rated as 'low quality' were retained in the narrative synthesis but were flagged in sensitivity analyses.

3. Results

3.1 Study Selection

The initial search identified 3,847 records. After deduplication, 2,941 titles and abstracts were screened. Full-text review was performed on 312 studies. A total of 67 peer-reviewed papers and 3 grey literature publications met inclusion criteria and were included in the review. Studies were conducted across 24 countries, with the largest proportions from the United States (n=29), the United Kingdom (n=11), Germany (n=6), Iran (n=5), and Australia (n=4).

3.2 Overview of Identified Factors

Twenty-three distinct contributing factors were identified across included studies and classified into three major domains: provider-level factors, system-level factors, and patient-level factors. Table 1 summarises the principal factors, their prevalence across studies, and the level of evidence.

4. Provider-Level Factors

4.1 Diagnostic Errors

Diagnostic errors emerged as the most frequently reported factor across included studies (n=41; 59.4% of studies). A systematic review of 34 studies from five countries confirmed that diagnostic errors represent the leading cause of malpractice claims in primary care settings. These errors encompass failure to diagnose, delayed diagnosis, and misdiagnosis — each carrying distinct patterns of patient harm and litigation risk.

Research conducted at Johns Hopkins University identified 15 high-risk clinical conditions — including pulmonary embolism, sepsis, lung cancer, myocardial infarction, and stroke — responsible for over half of annual deaths and severe disabilities attributable to diagnostic error. These conditions shared a common feature: initial presentations that overlapped with more benign conditions, creating windows of diagnostic uncertainty that clinicians navigated with variable skill and institutional support.

The cognitive dimensions of diagnostic error have been extensively studied. Contributing mechanisms include premature closure (anchoring on an initial diagnosis without seeking disconfirmatory evidence), availability bias (overweighting recent or memorable diagnoses), and framing effects (allowing the manner in which a clinical problem is presented to unduly influence diagnostic reasoning). Systemic factors — including inadequate time for clinical assessment, absence of diagnostic decision support tools, and poor continuity of care — compound these individual cognitive vulnerabilities.

4.2 Communication Failures

Communication failures were identified as a major contributing factor in 38 studies (55.1%). Analysis of approximately 28,000 malpractice cases from the Candello database found that failures to reconcile relevant signs, symptoms, or test results were present in 22% of all cases. Communication deficits manifest at multiple levels: between treating physicians; between physicians and nursing staff; across care transitions (e.g., handover from emergency to inpatient care); and critically, between clinicians and patients.

The doctor-patient relationship was consistently highlighted as a pivotal domain. Patients who felt they had been inadequately informed about their diagnosis, treatment options, prognosis, or the risks of a proposed intervention were significantly more likely to initiate malpractice claims following an adverse outcome. Studies examining the psychology of litigation found that the decision to sue was often driven less by the severity of the outcome than by the patient's perception that the healthcare provider had been dismissive, uncommunicative, or unwilling to acknowledge error.

Deficiencies in obtaining informed consent — a specific and legally significant form of communication — appeared in 19 studies (27.5%). In high-stakes specialty areas such as surgery, interventional radiology, and oncology, inadequate consent processes were directly implicated in litigation even when the clinical outcome was within the expected range of procedural risk.

4.3 Medication Errors

Medication errors were reported in 34 studies (49.3%), encompassing prescribing errors (incorrect drug, dose, or frequency), dispensing errors, administration errors, and monitoring failures. In primary care, medication errors ranked alongside diagnostic errors as the predominant categories of malpractice claims. Polypharmacy in elderly patients, complex drug-drug interactions, and inadequate reconciliation at care transitions were identified as particularly high-risk scenarios.

Electronic prescribing systems have been shown to reduce prescribing errors in several included studies; however, their implementation was associated with new categories of risk including alert fatigue (clinicians ignoring excessive or low-specificity safety warnings) and system-induced errors arising from template-based prescribing.

4.4 Physician Demographics and Specialty

A systematic review of 67 studies categorised risk factors as demographic and workplace-related. Gender, age, years spent in practice, and the number of patient lists were all associated with differential malpractice risk. Male physicians had higher absolute rates of malpractice claims across most studies, though female physicians in certain specialties (notably obstetrics) showed elevated risk in some analyses. Physicians at mid-career stages — possessing sufficient experience to take on complex cases but potentially beyond the peak of supervised learning — demonstrated the highest risk profiles in several cohort studies.

Specialty was a consistent predictor. The specialties most frequently implicated across studies included obstetrics and gynaecology, general and orthopaedic surgery, emergency medicine, neurosurgery, and anaesthesiology. These specialties share common features: high procedural complexity, time-critical decision-making, frequent interaction with severely ill patients, and high baseline rates of adverse outcomes against which negligence must be distinguished.

A particularly important finding was that prior malpractice claims were the strongest predictor of future claims. Physicians with a single paid claim were nearly four times more likely to incur another paid claim within five years compared to claim-free peers, independent of specialty. This finding has direct implications for risk stratification, targeted monitoring, and early intervention programs.

4.5 Physician Impairment: Burnout and Substance Use

Physician impaired performance — encompassing burnout, emotional exhaustion, depersonalisation, and substance use disorders — was reported in 22 studies (31.9%). Burnout was particularly prominent in specialties with heavy workloads, frequent on-call obligations, and high exposure to patient mortality: emergency medicine, intensive care, and oncology. Impaired performance associated with burnout manifested in increased rates of prescribing errors, reduced vigilance during procedures, and deterioration in communication quality.

Substance use disorders, while less prevalent than burnout, were associated with significantly elevated risk of impaired clinical performance. The culture of silence surrounding physician substance use — driven by fears of professional consequences and stigma — was identified as a system-level barrier to early identification and intervention.

5. System-Level Factors

5.1 Clinical Workload and Staffing

High clinical workload was identified as a high-strength system-level factor in 30 studies (43.5%). Excessive patient loads increase the likelihood of clinician error through cognitive overload, time pressure, and reduced opportunity for thorough clinical assessment. Studies from emergency medicine settings demonstrated a consistent relationship between emergency department crowding, boarding of admitted patients, and rates of adverse outcomes. In surgical contexts, excessive consecutive hours of operating was associated with increased intraoperative complications.

Nurse-to-patient staffing ratios were examined in several included studies. Inadequate nursing staffing — associated with monitoring failures, delayed response to patient deterioration, and medication administration errors — was found to be a significant mediating factor in adverse outcomes, even when physician performance was satisfactory. This finding underscores the importance of understanding malpractice risk as a team-level and system-level phenomenon rather than one attributable solely to individual clinicians.

5.2 Supervision and Training Environment

Inadequate supervision of junior clinicians was reported in 21 studies (30.4%) as a contributing system factor. Training hospitals, while essential for the development of clinical competence, present a specific risk profile in which patients are treated by clinicians at varying stages of skill acquisition. The transition from supervised to independent practice — a period characterised by full clinical responsibility but relatively limited experience — was consistently associated with elevated malpractice risk.

The country and type of initial medical training emerged as a significant demographic factor in multinational analyses. Internationally trained physicians practising in countries other than where they received their training faced additional risks stemming from different clinical protocols, language barriers, and unfamiliarity with local medicolegal frameworks.

5.3 Practice Setting and Organizational Characteristics

Practice setting was a significant predictor of malpractice risk. Solo practitioners carried higher risk compared to group practice physicians, reflecting the absence of collegial consultation, peer review, and shared governance. The private versus public sector distinction was significant in some national healthcare contexts: private practitioners, who may face greater financial incentives to maximise throughput, showed elevated claims rates in several high-income country studies.

Care coordination failures — breakdowns in the transfer of clinical information across care settings — were reported in 18 studies (26.1%). These failures most commonly occurred at the interface between primary and secondary care, and at discharge from hospital. Missing test results, incomplete medication reconciliation, and absence of clear follow-up arrangements were the most frequently cited specific failures.

5.4 High-Risk Specialties and Procedural Environments

Emergency medicine was over-represented in malpractice studies relative to its share of overall clinical activity. This likely reflects the high-acuity, time-pressured, and resource-constrained nature of emergency care, compounded by a patient population that often presents with undifferentiated, serious conditions and high baseline risk. Obstetrics and gynaecology consistently ranked among the most litigated specialties globally, with birth-related injuries — including cerebral palsy, brachial plexus injuries, and maternal mortality — representing the most costly claims categories.

Surgical specialties — particularly orthopaedic, general, and neurosurgery — showed high rates of technical-error-related claims. A large analysis of over 8,000 surgical malpractice cases from China (2008–2023) sought to identify risk factors associated with both surgical disputes and catastrophic compensation, finding that intraoperative decision-making and postoperative monitoring failures were the most commonly implicated factors.

6. Patient-Level Factors

6.1 Clinical Complexity and Comorbidity

The clinical complexity of the patient's presenting condition was a significant patient-level factor in 25 studies (36.2%). Patients with multiple comorbidities, atypical disease presentations, or rare conditions are inherently more difficult to diagnose and manage accurately. The probability of adverse outcomes — and consequently of malpractice litigation — increases with clinical complexity, even in the absence of any identifiable provider error. This creates a fundamental challenge in attributing harm: distinguishing between outcomes that are negligent and those that are inherent to the complexity of the case.

Elderly patients presented a particularly high-risk population. The combination of multiple chronic conditions, polypharmacy, cognitive impairment, and atypical symptom presentation made accurate diagnosis more challenging and the probability of medication error higher. Several studies found that the elderly were over-represented in both adverse outcome statistics and, to a lesser degree, in malpractice claims.

6.2 Health Literacy and Patient Engagement

Health literacy — the ability of patients to obtain, understand, and use health information to make informed decisions — was identified as a contributing patient-level factor in 16 studies. Low health literacy was associated with delayed presentation (patients failing to recognise serious symptoms), poor adherence to treatment plans, and misunderstanding of post-procedural care instructions, all of which could contribute to worse outcomes and subsequent litigation.

Patient engagement in shared decision-making was identified as a protective factor. Patients who reported feeling genuinely involved in their care decisions, who understood the risks and benefits of proposed treatments, and who maintained continuity with a regular care provider were less likely to initiate malpractice claims following adverse outcomes, even after controlling for clinical severity.

6.3 Socioeconomic and Demographic Factors

Socioeconomic factors intersected with malpractice risk in complex ways across included studies. Patients from lower socioeconomic backgrounds were more likely to experience delayed diagnosis (due to barriers to healthcare access) and to receive care in higher-workload settings; however, they were paradoxically less likely to initiate formal malpractice claims, likely due to limited knowledge of legal rights, reduced access to legal representation, and financial and logistical barriers to litigation.

Conversely, patients from higher socioeconomic groups — who may have greater expectations of care quality, superior access to second opinions, and greater capacity for litigation — showed higher claim rates in some national healthcare contexts. This finding suggests that malpractice claim statistics may significantly underrepresent the true incidence of negligence in lower-income populations.

7. Discussion

7.1 Synthesis of Evidence

This systematic review confirms that medical malpractice is a multifactorial phenomenon in which no single factor reliably predicts malpractice risk. The evidence consistently supports a model in which provider-level vulnerabilities (diagnostic reasoning, communication skills, technical competence, and personal wellbeing) interact with system-level pressures (workload, supervision, practice setting) and patient-level characteristics (clinical complexity, health literacy) to produce environments in which adverse outcomes — and subsequent litigation — are more likely.

The consistency of diagnostic error and communication failure as the leading factors across diverse healthcare settings is a particularly significant finding. It suggests that these are not features of specific national healthcare systems or specialty contexts, but represent universal vulnerabilities in the interface between clinical reasoning and human communication. This has important implications for medical education: both diagnostic reasoning and clinical communication are teachable skills, and their systematic inclusion in undergraduate and postgraduate curricula is supported by the evidence.

7.2 Implications for Healthcare Systems

The finding that prior malpractice claims are the strongest predictor of future claims — with affected physicians being nearly four times more likely to incur subsequent claims — points to the value of early risk stratification and targeted professional support. Rather than treating each malpractice claim as an isolated event, healthcare systems should develop proactive monitoring frameworks that identify high-risk practitioners early and offer structured remediation, mentoring, and wellbeing support.

System-level factors — particularly high clinical workload and inadequate supervision — are not amenable to individual-level interventions. These findings call for healthcare workforce planning reforms that ensure adequate staffing ratios, protect clinician rest periods, and create cultures in which seeking consultation is supported rather than stigmatised. The evidence on burnout underscores that clinician wellbeing is not a peripheral concern but a direct patient safety issue.

7.3 Limitations of the Review

Several limitations must be acknowledged. First, malpractice claim data — the primary outcome measure across most included studies — is a proxy for patient harm that is shaped by litigation culture, legal systems, and insurance structures that vary substantially between countries. The same adverse event may result in a formal claim in one jurisdiction but not another, limiting cross-national comparisons.

Second, the majority of included studies were conducted in high-income countries, particularly the United States. The applicability of findings to low- and middle-income healthcare systems — which face distinct resource constraints, regulatory environments, and cultural contexts — requires further study.

Third, the review found significant heterogeneity in how malpractice and its contributing factors were defined and measured across studies, limiting the feasibility of quantitative meta-analysis and necessitating a narrative synthesis approach.

8. Prevention Strategies and Recommendations

The evidence identified in this review supports a multi-level prevention framework addressing factors at the provider, system, and patient levels.

8.1 Provider-Level Interventions

• Mandatory training in structured diagnostic reasoning, including cognitive bias recognition and metacognitive strategies, integrated into both undergraduate medical education and continuing professional development programs.

• Communication skills training focusing on informed consent processes, breaking bad news, and patient-centred consultation techniques, with particular attention to high-risk specialty contexts.

• Implementation of structured handover protocols (e.g., SBAR — Situation, Background, Assessment, Recommendation) to reduce information loss at care transitions.

• Systematic screening for physician burnout and substance use disorders, with confidential support pathways that decouple help-seeking from professional disciplinary processes.

• Risk stratification programmes that identify clinicians with elevated complaint or claim histories and provide targeted mentoring, supervision, and remediation.

8.2 System-Level Interventions

• Healthcare workforce planning reforms to ensure staffing levels are adequate for safe care delivery, with mandatory rest periods and limits on consecutive working hours.

• Development and implementation of clinical decision support tools for high-risk diagnostic scenarios, particularly for the 15 conditions identified as responsible for the majority of diagnostic-error-related harm.

• Transition from solo practice models to team-based care structures that facilitate peer consultation, shared governance, and distributed accountability.

• Introduction of structured post-discharge follow-up systems and care coordination protocols to address care transition failures.

• No-fault compensation systems and mediation processes as alternatives to adversarial litigation, reducing the financial and psychological costs of malpractice for both patients and clinicians while facilitating learning from adverse events.

8.3 Patient-Level Interventions

• Health literacy initiatives that equip patients to recognise serious symptoms, adhere to treatment plans, and engage meaningfully in shared decision-making.

• Patient advocacy programmes that improve access to malpractice redress mechanisms for underserved and low-income populations.

• Investment in primary care infrastructure to reduce inappropriate emergency department utilisation and enable continuity of care for complex patients.

9. Conclusion

This systematic review provides a comprehensive synthesis of evidence on selected factors associated with medical malpractice in healthcare systems. The evidence confirms that malpractice risk is multifactorial, with provider-level, system-level, and patient-level factors acting in complex and interdependent ways. No single factor dominates; rather, risk accumulates through the interaction of multiple vulnerabilities at different levels of the healthcare system.

Diagnostic errors and communication failures represent the most universally reported contributing factors, underscoring the importance of strengthening clinical reasoning skills and doctor-patient communication across all specialties and settings. High clinical workload, inadequate supervision, and poor care coordination represent modifiable system-level risks that demand structural healthcare reform rather than individual-level blame.

Prior malpractice claims are the strongest predictor of future claims, pointing to the value of proactive risk stratification and early, supportive intervention for high-risk practitioners. Physician burnout and substance use — direct threats to clinical performance — must be recognised and addressed as patient safety issues rather than personal failures.

The findings of this review have direct implications for medical education, healthcare workforce planning, clinical governance, patient safety policy, and the design of medico-legal frameworks. Effective prevention of medical malpractice requires a systems-thinking approach: one that acknowledges the complexity of healthcare delivery, invests in the conditions for safe practice, and places patient wellbeing at the centre of all healthcare decisions.

Future research should prioritise: longitudinal studies examining the long-term effectiveness of specific malpractice prevention interventions; comparative studies across low-, middle-, and high-income healthcare settings; and qualitative research that captures the perspectives of patients, clinicians, and healthcare administrators on the lived experience of malpractice and its aftermath.

Funding

There is no financial support for numerous projects and initiatives. It encompasses a systematic approach peer review journal to identify and evaluate possible sources that align with the precise goals and necessities of the scheme. In this section, we will discover valuable insights from different perspectives to help you direct the development efficiently.

Availability of Data and Material

All data relevant to the study are included in the article or uploaded as online supplemental search engines Embase. All data relevant to the study are included in the article. A comprehensive search strategy was developed in consultation with a research librarian to search Ovid-Medline, Ovid Embase, Scopus and the Cochrane Central Register of Controlled Trials for peer-reviewed literature and Google for grey literature. Databases were searched.

Acknowledgement

Vice counselor at Nugal university who contributed to the development of the search strategy provided guidance on the selection of risk of bias tools for critical appraisal.

Authors Contributions

There is no single author who contributed review of research, formation and/or performance of the published work by those from the original research group, peer review for systematic review variety of country that contributed their original work intellectually and specifically critical review, observation or modification counting pre- or post-publication stages.