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Falls among geriatric cancer patients: a systematic review and meta-analysis of prevalence and risk across cancer types

Abstract

Background

Falls represent a significant health concern among the older adults, particularly geriatric cancer patients, due to their increased susceptibility from both age-related and cancer treatment-related factors. This systematic review and meta-analysis aimed to synthesize global data on the prevalence and risk of falls in this population to inform targeted fall prevention strategies.

Methods

Following PRISMA 2020 guidelines, we conducted a comprehensive search of PubMed, Embase, and Web of Science up to October 2024. Articles were screened using Nested Knowledge software by two independent reviewers. Eligible studies included those involving geriatric cancer patients aged 60 years or older reporting on fall prevalence. Quality assessment was performed using a modified Newcastle–Ottawa Scale, and meta-analysis was conducted using random-effects models with R software.

Results

From 1,365 identified studies, 86 met the inclusion criteria, encompassing 180,974 participants. The pooled prevalence of falls was 24% (95% CI, 20%–28%), with substantial heterogeneity (I2 = 100%). Country- and cancer-type-specific analyses revealed variability in fall prevalence, with breast cancer patients showing the highest prevalence. The comparative risk analysis did not show a statistically significant difference in fall risk between cancer patients and non-cancer controls.

Conclusion

Falls are a prevalent and concerning issue among geriatric cancer patients, with substantial variability influenced by cancer type and study design. Personalized fall prevention strategies tailored to cancer-specific risk factors are essential. Further research is warranted to explore the complex interplay of cancer treatments, frailty, and fall risk in this vulnerable population.

Peer Review reports

Introduction

Falls were a significant and often under-recognized health concern among older adults, contributing to substantial morbidity, mortality, and increased healthcare costs [1]. For older adults, falls were not merely a natural consequence of aging but were frequently indicative of underlying health issues such as frailty, polypharmacy, and neurological or musculoskeletal disorders [2]. Geriatric cancer patients, in particular, presented unique vulnerabilities due to the complex interplay between age-related physiological changes and cancer-specific treatments, which could worsen balance and mobility impairments [3, 4]. Radiotherapy is vital for treating cancer in geriatric patients but can exacerbate frailty through side effects like fatigue and reduced physical function, increasing fall risks. Integrating frailty assessment into radiotherapy could improve treatment outcomes and safety for this vulnerable population [5]. Studies have highlighted the higher fall risk in this group due to factors such as chemotherapy-induced neuropathy, sarcopenia, and impaired physical function [6]. Reported prevalence rates of falls in older cancer patients varied widely, ranging from 15 to 50% depending on cancer type, treatment regimen, and comorbidities, necessitating a comprehensive analysis to clarify these variations [7, 8]. For instance, older adults with multiple myeloma were found to have a significantly higher fall risk due to cancer-related bone disease and treatment-induced weakness [3]. Similarly, pre-treatment falls in older women receiving adjuvant chemotherapy for breast cancer were shown to predict greater hospitalization risks and chemotherapy-related toxicities [4]. Understanding these nuanced impacts on geriatric oncology patients was crucial for developing effective fall-prevention strategies tailored to this vulnerable population.

The confluence of oncological and geriatric syndromes in older cancer patients contributed to a complex clinical concern that keen fall risk through multiple pathways [6, 7]. For example, among older men undergoing androgen deprivation therapy for prostate cancer, the treatment was associated with reduced bone density and increased fracture risk, further elevating their susceptibility to falls [9]. Additionally, the symptom burden and reduced physical function reported in older cancer patients were strongly linked to an increased risk of falls and subsequent physical decline [6]. A population-based study demonstrated that community-dwelling older adults cancer survivors had a higher prevalence of falls compared to their non-cancer counterparts, underscoring the need for tailored interventions targeting this group [7]. Moreover, older Medicare beneficiaries with cancer frequently presented with multiple geriatric syndromes, such as cognitive impairment, incontinence, and mobility disability, which compounded their risk of falling [8]. These findings highlighted the need for a comprehensive approach to fall prevention that accounted for both oncological and geriatric factors.

This study aims to systematically review and analyze the global prevalence and risk of falls among geriatric cancer patients. By synthesizing evidence from diverse settings, it provides a comprehensive understanding of the burden of falls, informing evidence-based guidelines and personalized fall prevention strategies to enhance patient safety, reduce hospitalizations, and improve quality of life in this vulnerable population.

Methods

The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 standards were followed in this systematic review and meta-analysis [10] (Table S1). The review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO) with CRD42024596426.

Eligibility criteria

Studies were included if they met the following criteria: (1) the study population consisted of geriatric cancer patients aged 60 years or older, (2) the study reported data on either the prevalence of falls or factors associated with fall risk in this population, (3) the study design was clinical trial and observational (cross-sectional, cohort, or case–control), and (4) the article was published in a peer-reviewed journal in English. Studies were excluded if they were reviews, commentaries, editorials, case reports, or focused on non-cancer-related falls or falls in non-geriatric populations. Articles that did not present original data, provided insufficient fall-related data, or were not accessible in full text were also excluded (Table S2).

Literature search

A systematic literature search was conducted using PubMed, Embase, and Web of Science from their inception to September 2024. The search strategy employed a combination of MeSH terms and keywords to identify studies investigating the prevalence and risk falls among older cancer patients. Additionally, manual searches of reference lists from selected studies and relevant reviews were conducted to ensure no eligible articles were missed (Table S3).

Screening and data extraction

The screening process was performed in two stages using Nested Knowledge software: (1) title and abstract screening, and (2) full-text review. During the second stage, full texts of potentially eligible studies were retrieved and reviewed by the same two independent reviewers to confirm their inclusion. Any disagreements were resolved through discussion until a consensus was reached.

Data extraction was conducted using Nested Knowledge, a semi-automatic software designed to streamline systematic reviews and meta-analyses. The software facilitates data extraction through its tagging function, allowing reviewers to systematically organize and annotate study characteristics such as author, year, country, participant demographics (age, sex, sample size), cancer type, and fall prevalence. In cases of missing or unclear data, corresponding authors were contacted for clarification. To ensure accuracy and reliability, all extracted data were cross-verified by a third reviewer.

Quality assessment

The quality of the included studies was evaluated using the Modified Newcastle–Ottawa Scale (NOS) modified for geriatric cancer research [11]. The NOS assessed study quality based on three domains: (1) selection of participants (0–4 points), (2) comparability of study groups (0–2 points), and (3) ascertainment of outcomes (0–3 points). Studies scoring 7 to 9 points were considered to have a low risk of bias, scores of 4 to 6 indicated moderate risk, and scores of 0 to 3 were classified as having a high risk of bias. The detailed scoring and assessment are provided in Table S4.

Statistical analysis

All statistical analyses were conducted using R® software (version 4.4.0) with the “meta” and “metafor” packages. Prevalence data were pooled using a random-effects model to account for between-study variability. For pooling prevalence data, the logit-transformed proportions (PLOGIT) were used as the primary summary measure, along with 95% confidence intervals (CI). Heterogeneity across studies was quantified using the I2 statistic, where values of 25%, 50%, and 75% represented low, moderate, and high heterogeneity, respectively [11]. Publication bias was assessed using Doi plots, and quantified using the Luis Furuya-Kanamori (LFK) index. An LFK index value between −1 and + 1 indicated no asymmetry, values between ± 1 and ± 2 indicated minor asymmetry, and values beyond ± 2 suggested major asymmetry [12, 13]. Leave-one-out sensitivity analyses were performed to test the robustness of the pooled results by excluding one study at a time and observing changes in the overall effect size. All statistical tests were two-tailed, with a significance level set at p < 0.05.

Results

Literature search

A total of 1,365 studies were identified through comprehensive database searches. After the excision of 437 duplicates, 928 records remained for title and abstract screening. During this stage, 575 records were excluded for not meeting the relevance criteria. The full texts of 353 articles were then reviewed for eligibility, resulting in the exclusion of 267 articles. In the final selection, 86 studies were included in the quantitative synthesis. The entire process of study selection is outlined in PRISMA flow diagram (Fig. 1).

Fig. 1
figure 1

PRISMA flow diagram

Summary of study characteristics

A total of 86 studies were included in the systematic review, representing a variety of study designs, cancer types, and geographic regions (Table 1). The majority of these studies were conducted in the United States (n = 52), followed by Canada (n = 10), Belgium (n = 4), and France (n = 4), with additional studies from countries such as Denmark, Germany, and Australia. The study designs were diverse, with cross-sectional studies being the most common (n = 29), followed by prospective (n = 25), retrospective (n = 22), and randomized clinical trials (n = 8). One study utilized a case–control design. The included studies examined various types of cancer, most notably breast cancer (n = 12), colorectal cancer (n = 7), prostate cancer (n = 5), and gastrointestinal cancers (n = 6). Other types, including lymphoma, multiple myeloma, and gynaecologic cancers, were also investigated. Study sample sizes varied widely, ranging from 51 to 60,265 participants. The majority of studies focused on older adults, especially those at heightened risk of falls due to cancer treatments and related comorbidities.

Table 1 Characteristics of studies

Meta-analysis

Prevalence of falls among geriatric cancer patients

Meta-analysis of 86 studies including 180,974 participants, the pooled prevalence of falls among geriatric cancer patients was estimated at 24% (95% CI, 20%–28%) (Fig. 2). The prediction interval ranged widely, from 4 to 68%, reflecting considerable variability between studies (Table 2). A high degree of heterogeneity was noted (I2 = 100%, P < 0.001). The leave-one-out sensitivity analysis (Figure S1) demonstrated that excluding individual studies had minimal impact on the overall pooled prevalence of falls among geriatric cancer patients, which consistently stayed at around 24% (95% CI: 0.2–0.28). The slight variations observed across duplications of the meta-analysis results. Despite significant heterogeneity (I2 = 100%), the stability of the pooled estimates suggests that no single study excessively influenced the final outcomes, thereby confirming the reliability of the findings. Following the exclusion of outliers, a reanalysis was performed. This refined analysis resulted in a slightly lower pooled prevalence of 23% (95% CI, 21%–24%). The prediction interval narrowed to 17% to 30%, indicating reduced variability between the studies (Fig. 3). Furthermore, the heterogeneity decreased markedly to I2 = 75% (P < 0.001), suggesting a more consistent pattern among the remaining studies after outliers were removed.

Fig. 2
figure 2

Forest plot illustrating the pooled prevalence of falls among geriatric cancer patients

Table 2 Subgroup analysis based on study design, country-specific, cancer types
Fig. 3
figure 3

Forest plot illustrating the pooled prevalence of falls among geriatric cancer patients after the exclusion of outliers

Sub-group analysis

The pooled prevalence of falls among older adults cancer patients varied across cancer types, study designs, and countries, as shown in the Table 2. Breast cancer had the highest prevalence at 32% (I2 = 94%), while colorectal and gastrointestinal cancers had prevalence of 15% (I2 = 100%) and 28% (I2 = 98%), respectively. Across all cancer types, the overall pooled prevalence was 24% (95% CI: 0.17–0.33), with substantial heterogeneity (I2 = 99%). Prevalence also differed by study design, with cross-sectional studies reporting the highest prevalence at 30% (I2 = 99%), followed by prospective studies at 24% (I2 = 98%) and retrospective studies at 14% (I2 = 100%). Randomized clinical trials showed a lower prevalence of 18% (I2 = 88%). The pooled prevalence across all study designs was 24% (95% CI: 0.20–0.28, I2 = 100%). Country-specific analysis revealed that the United States had a pooled prevalence of 22% (I2 = 100%) across 33 studies, Canada 23% (I2 = 95%), and France 58% (I2 = 98%). Denmark reported a lower prevalence of 12%, while Spain had a higher rate at 55% (I2 = 98%). In Korea and Japan, the prevalence were 50% and 41%, respectively. Overall, the pooled prevalence across all countries was 23% (95% CI: 0.17–0.30), with significant regional variability.

Risk of falls among geriatric cancer patients

The forest plot (Fig. 4) compares the fall risk between geriatric cancer patients and non-cancer controls, incorporating data from six studies. The pooled risk ratio (RR) was 1.099 (95% CI: 0.558–2.164), indicating no statistically significant difference in fall risk between the groups, although substantial heterogeneity was present (I2 = 96%). Sensitivity analysis showed that excluding individual studies had little impact on the overall pooled risk. For instance, when Wildes et al. [88] was excluded, the pooled risk ratio decreased to 0.9 (95% CI: 0.52–1.57), with I2 remaining at 96%. Conversely, omitting Spoelstra et al. [7] increased the risk ratio to 1.3 (95% CI: 0.6–2.5), reducing heterogeneity to I2 = 83% (Figure S2).

Fig. 4
figure 4

Forest plot interprets the risk of falls among geriatric cancer patients compared to non-cancer controls

Meta-regression

The bubble plot shows the meta-regression that analysed the impact of sample size on the rate of falls among older adult cancer patients. The meta-regression analysis indicated that changes in the pooled prevalence were not significantly affected by variations in sample size, with a p-value of 0.5577 (Fig. 5).

Fig. 5
figure 5

Bubble plot demonstrating meta-regression based on sample size and its effect on the proportion of falls in geriatric cancer patients

Publication bias

The Doi plot (Figure S3) shows substantial asymmetry, with an LFK index of −4.1, indicating the presence of publication bias. The asymmetry suggests potential issues with the included studies, affecting the consistency of the pooled estimates. This bias may influence the overall reliability of the results.

Discussion

This meta-analysis identified a pooled fall prevalence of 24% (95% CI: 20%–28%) across 86 studies, highlighting the significant risk faced by geriatric cancer patients. The high heterogeneity observed (I2 = 100%) suggests considerable variability across studies, likely attributable to differences in cancer types, treatments, and study designs. Notably, breast cancer patients exhibited the highest fall prevalence at 32%, while colorectal and gastrointestinal cancer patients had lower rates of 15% and 28%, respectively. These findings underscore the need for cancer-specific considerations when evaluating fall risk in older adults. The analysis also revealed that cross-sectional studies reported a higher fall prevalence (30%) than prospective (24%) and retrospective (14%) studies, emphasizing the influence of study design on reported outcomes. Despite this heterogeneity, sensitivity analyses confirmed the robustness of the pooled estimates, indicating that the overall conclusions remain valid despite individual study differences.

A comparison of fall risk between cancer patients and non-cancer controls revealed no statistically significant difference overall (RR: 1.099, 95% CI: 0.558–2.164). However, individual studies presented mixed findings, such as Spoelstra et al. [7], which reported a reduced fall risk (RR: 0.476) among cancer patients, and Wildes et al. [88], which documented an elevated fall risk (RR: 3.249). These discrepancies likely stem from variations in patient characteristics, study methodologies, and cancer treatments. Nonetheless, the overall analysis suggests that fall risk is not uniformly higher across all cancer subgroups, emphasizing the need for context-specific assessments in clinical practice.

Several factors likely contribute to the increased fall risk observed in geriatric cancer patients. Cancer treatments, including chemotherapy, radiotherapy, and hormone therapy, are associated with well-documented side effects such as fatigue, neuropathy, and muscle weakness, all of which increase fall risk [36]. In breast cancer patients, aromatase inhibitors exacerbate joint pain and mobility limitations, leading to increased falls [23]. Similarly, prostate cancer patients on androgen deprivation therapy (ADT) experience muscle wasting and bone density loss, further elevating their fall risk, as noted in Wildes et al. (2018) [3, 88]. In addition to treatment effects, age-related frailty compounds fall risk, as older adults with cancer often present with comorbid conditions such as osteoporosis, cardiovascular disease, and diabetes, all of which heighten fall susceptibility. The interaction between cancer, its treatment, and underlying frailty underscores the complexity of fall risk management in this population.

Clinically, these findings highlight the critical need for routine fall risk assessments in geriatric oncology care. Given the multifactorial nature of falls in this population, clinicians should adopt multidisciplinary approaches that incorporate physical therapy, balance training, and medication reviews to mitigate fall risk [95]. These interventions are particularly important for high-risk subgroups, such as breast cancer patients on aromatase inhibitors and prostate cancer patients receiving ADT [96]. Moreover, integrating personalized fall prevention strategies into cancer treatment plans could significantly reduce fall-related injuries and hospitalizations, improving overall patient outcomes [97]. From a public health perspective, community-based programs that promote physical activity and home safety modifications could play a key role in reducing fall incidence among older cancer patients. Such initiatives, when coupled with clinical interventions, could lessen the burden of falls and enhance the quality of life for this vulnerable population [98].

Despite the robustness of the findings, the high heterogeneity observed in this analysis indicates that further research is necessary to better understand the factors contributing to fall risk variability. Prospective cohort studies focused on specific cancer types and treatments would be instrumental in elucidating the long-term effects of these therapies on fall risk. For example, studies examining the impact of chemotherapy-induced neuropathy or hormone therapy-induced frailty could provide valuable insights into targeted interventions aimed at reducing fall risk [99]. Moreover, future research should explore the role of sarcopenia and frailty as mediators between cancer treatment and falls. Studies such as Kenis et al. [49] have already begun investigating the potential of geriatric screening to identify patients at high risk of falls, and further work in this area could refine risk stratification in clinical practice [49].

Addressing publication bias, as indicated by the asymmetry observed in the Doi plot, is also critical for enhancing the accuracy of future meta-analyses. Ensuring that smaller or negative studies are adequately represented will help create a more comprehensive understanding of fall risk in geriatric cancer patients. Future research should prioritize efforts to address these gaps, ultimately leading to more effective fall prevention strategies and better patient outcomes in this high-risk population.

Conclusion

This meta-analysis provides a comprehensive assessment of the prevalence of falls among geriatric cancer patients, with an overall estimate of 24%. Significant variability was observed across subgroups, including cancer types, study designs, and geographic regions, indicating the need for tailored interventions. Despite the high heterogeneity, sensitivity analyses confirmed the robustness of the pooled estimates. No statistically significant difference in fall risk was observed when comparing geriatric cancer patients to non-cancer controls. These findings highlight the importance of implementing personalized fall prevention strategies and underscore the need for further research to address the factors contributing to fall risk in this vulnerable population.

Data availability

All data generated or analyzed during this study are included in this published article (and its Supplementary information files).

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Acknowledgements

The authors acknowledge Nested-Knowledge, MN, USA for providing access to the software.

Funding

This study received no funding.

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Authors and Affiliations

Authors

Contributions

Conceptualization: G.B., D.L., S.G., A.K.B. Data curation: G.P., I.K., M.L., S.I. Formal analysis: G.V.S.P., A.P., T.V., P.M. Investigation: P.S., M.P.S., A.Y., A.P. Methodology: M.J., M.S., R.M., S.S. Project administration: Q.S.Z., G.B., D.L., S.G. Resources: A.K.B., G.P., I.K., M.L. Software: S.I., G.V.S.P., A.P., T.V. Supervision: P.M., P.S., M.P.S., A.Y. Validation: A.P., M.J., M.S., R.M. Visualization: S.S., Q.S.Z., G.B., D.L. Writing – original draft: S.G., A.K.B., G.P., I.K. Writing – review & editing: M.L., S.I., G.V.S.P., A.P.

Corresponding authors

Correspondence to Sanjit Sah or Quazi Syed Zahiruddin.

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Supplementary Information

12877_2025_5722_MOESM1_ESM.docx

Supplementary Material 1: Table S1. PRISMA checklist. Table S2. Inclusion and Exclusion criteria. Table S3. The adjusted search terms as per searched electronic databases. Table S4. Modified-Newcastle–Ottawa Scale (NOS). Figure S1. Sensitivity analysis (Leave-one-out) assessing the influence of individual studies on the pooled prevalence of falls. Figure S2. Leave-one-out meta-analysis showing the risk of falls in geriatric cancer versus non-cancer patients. Figure S3. DOI plot with LFK index assessing publication bias in the meta-analysis of falls among geriatric cancer patients.

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Lingamaiah, D., Bushi, G., Gaidhane, S. et al. Falls among geriatric cancer patients: a systematic review and meta-analysis of prevalence and risk across cancer types. BMC Geriatr 25, 179 (2025). https://doiorg.publicaciones.saludcastillayleon.es/10.1186/s12877-025-05722-1

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