Trends and disparities of diverticular disease mortality in the United States before and during the COVID-19 era: estimates from the Centers for Disease Control WONDER database

Thai Hau Kooa, Venkata Sunkesulab, Rishi Chowdharyc, Xue Bin Leonga, Ronnie Fassb, Ala A. Abdel Jalilb,d

Gastrointestinal Function and Motility Unit, Hospital Universiti Sains Malaysia, School of Medical Sciences, Kubang Kerian, Kelantan, Malaysia; Division of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA

aGastrointestinal Function and Motility Unit, Hospital Universiti Sains Malaysia, School of Medical Sciences, Kubang Kerian, Kelantan, Malaysia; bDivision of Gastroenterology and Hepatology, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA; cDepartment of Medicine - Pediatrics, MetroHealth Medical Center, Case Western Reserve University, Cleveland, Ohio, USA; dDepartment of Medicine, Case Western Reserve University, Cleveland, Ohio, USA

Correspondence to: Ala A. Abdel Jalil, MD, FACP, Department of Medicine, Case Western Reserve University, Cleveland, Ohio, USA, e-mail: aaa472@case.edu
Received 13 March 2025; accepted 2 June 2025; published online 27 June 2025
DOI: https://doi.org/10.20524/aog.2025.0973
© 2025 Hellenic Society of Gastroenterology

Abstract

Background Diverticular disease (DD) is a common gastrointestinal condition in the United States (US) associated with significant morbidity and mortality. The COVID-19 pandemic posed new challenges that might exacerbate DD-related outcomes. This study analyzed the trends in all-cause, digestive system (DGS), and cardiovascular system (CVS) mortality associated with DD from 1999-2020, focusing on the impact of COVID-19 on age-adjusted mortality rates (AAMRs) and disparities across demographics and geography.

Methods Data from adults aged ≥25 years were extracted from the Centers for Disease Control WONDER database. AAMRs per 100,000 people were standardized using the 2000 US census. AAMRs were assessed from 1999-2020 for context, while the primary comparative analysis focused on the pre-COVID-19 (2016-2019) and post-COVID-19 (2019-2022) periods using linear regression models. AAMRs were stratified by age, sex, race/ethnicity and geographic region. Note: 2021-2022 trends were extrapolated, as finalized mortality records were not available at the time of analysis.

Results Between 1999 and 2020, 115,009 DD-related deaths occurred (AAMR 2.4/100,000), including 70,648 DGS-related deaths (AAMR 1.5) and 17,405 CVS-related deaths (AAMR 0.4). Females (AAMR 2.6), elderly individuals (AAMR 11.1), and non-Hispanic whites (AAMR 2.5) had the highest mortality rates. Post-COVID-19, AAMRs increased from 1.8 to 2.0, with significant increases among rural populations. DGS-related deaths were most prevalent, particularly in non-metropolitan areas.

Conclusions DD-related mortality has increased in the post-COVID-19 period, especially in vulnerable populations, such as the elderly, rural residents and females. These findings highlight the need for equitable healthcare interventions and the continued monitoring of pandemic-era health disparities.

Keywords Diverticular disease, COVID-19, mortality trends, disparities, CDC WONDER

Ann Gastroenterol 2025; 38 (4): 428-439


Introduction

Diverticular disease (DD) is a prevalent gastrointestinal condition characterized by the formation of diverticula and small pouches in the colonic wall. Its incidence has notably increased in western countries, with studies indicating that the prevalence of diverticulosis ranges from 20-42% in Europe and North America [1]. Its prevalence has risen significantly over the past few decades, affecting an estimated 2.5 million individuals in the United States (US) alone, with substantial implications for healthcare systems owing to the associated morbidity and mortality. In the US, DD has become a leading cause of gastrointestinal-related hospital admissions, with an estimated 280,000 hospitalizations in 2009, incurring an aggregate cost of $2.7 billion [2].

While the majority of individuals with DD remain asymptomatic, an estimated 10-25% will go on to develop diverticulitis, a complication that can cause severe outcomes related to hospitalization and death, including perforation, abscess formation and peritonitis [1]. The management of DD and its complications have changed in recent years. Between 2002 and 2007, there was an increasing trend in the number of elective surgical resections performed for diverticulitis [3]. Mortality rates associated with DD have remained a critical public health concern, disproportionately affecting older adults, females, and non-Hispanic white populations. Despite improved diagnosis and management, disparities persist across demographic and geographical lines, suggesting inequities in access to care and health outcomes. Additionally, deaths related to DD are often complicated, with other systemic conditions complicating the clinical course, and major comorbidities of the digestive system (DGS) and cardiovascular system (CVS).

The COVID-19 pandemic has created unmatched disruptions in the provision of healthcare services worldwide, which in turn have adversely affected the management of many diseases, including DD, by delaying diagnosis and reducing the provision of routine medical care, all of which may contribute to a deterioration in outcomes from DD. There was a significant reduction in hospital admissions for diverticulitis during the pandemic, with more severe cases presenting to emergency departments [4]. Lockdowns and fear of the virus have caused further delays in presentations, possibly contributing to more complicated presentations of DD [5]. Emerging evidence suggests that COVID-19 may indirectly contribute to mortality through shared pathogenetic mechanisms, such as increased systemic inflammation and hypercoagulability. Moreover, rural and underserved regions have been disproportionately burdened by reduced healthcare infrastructure and resource constraints during the pandemic.

Accordingly, the present study aimed to conduct an in-depth analysis of trends in mortality due to DD in the period between 1999 and 2020 in the US. The current study evaluated demographic and geographic disparities in mortality rates from DD, with special attention paid to possible influences of the COVID-19 pandemic, using data extracted from the Centers for Disease Control and Prevention’s Wide-ranging Online Data for Epidemiologic Research (CDC WONDER) database. This analysis aimed to explain the interaction between chronic disease management and pandemic-related challenges, inform strategies for equitable healthcare delivery, and improve patient outcomes.

Materials and methods

Study design and data source

We used the National Vital Statistics System (NVSS), via the CDC WONDER platform, to obtain de-identified data on the estimated diverticular disease-related mortality in all individual US counties. The NVSS database registers more than 99% of deaths in the USA, and this study used data updated on January 22, 2022 [6]. The CDC WONDER’s Underlying Cause of Death database captures a single underlying cause of death, as well as demographic data including age, sex, race/ethnicity, from death certificates for US residents [7]. The underlying causes of death were classified according to the International Classification of Diseases, 10th revision (ICD-10), and were based on the physician’s entry in the cause of death section of the death certificate. When a physician entered more than 1 cause or condition, the underlying cause was determined by the sequence of conditions on the certificate, the provisions of the ICD, and the associated selection rules and modifications.

Each death certificate includes 1 underlying cause of death, defined as the disease or injury that initiated the sequence of events leading directly to death, as well as up to 20 additional contributing causes, which may include comorbidities or intermediate steps [6,7]. The CDC WONDER platform distinguishes between these categories using ICD-10 coding algorithms and selection rules [6,7]. For instance, if a death certificate listed both COVID-19 and DD, the CDC’s ICD-10 algorithm would determine which condition was the primary underlying cause. Chronic conditions such as DD often appear only as contributing causes and may not be captured when analyzing underlying causes alone. Consequently, our analysis may underrepresent the broader burden of DD-related mortalities.

We obtained county-level all-cause (ICD-10 code K57), DGS-related (ICD-10 code K00-K92), and CVS-related mortality rates (ICD-10 code I00-I99) associated with DD from January 1, 1999, to December 31, 2020. County-level mortality data were aggregated between 1999 and 2020 to maximize the data available for the multivariable modeling. All deaths related to COVID-19 and DD were considered, and the causes of death were identified using ICD-10 code U07.1 for COVID-19. These codes were used to categorize deaths as contributing or underlying causes. Both terms were then queried to identify patients who had both COVID-19 and DD as contributing or underlying causes of death (all-cause, DGS, or CVS-related deaths).

We then performed linear regression analysis to determine mortality rates based on trends 3 years before (between 2016 and 2019) and after (between 2019 and 2022) COVID-19. Following CDC guidelines, county-level data representing fewer than 10 people were suppressed for confidentiality. We also censored counties reporting fewer than 20 deaths, because these mortality rates are unreliable [7]. A flowchart (Fig. 1) was constructed to illustrate the data selection and stratification process. Additionally, a conceptual diagram (Fig. 2) was developed to clarify the hypothesized relationships among COVID-19, demographic factors, healthcare access and DD-related mortality.

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Figure 1 Study selection flowchart showing inclusion of death records from CDC WONDER for adults aged ≥25 years with diverticular disease listed as underlying or contributing cause of death (1999-2020)

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Figure 2 Conceptual model illustrating hypothesized impact of COVID-19 period, demographics, and healthcare access on diverticular disease-related mortality

Study population

To narrow the scope of our analysis to the adult population, our inclusion criteria focused on adults aged ≥25 years. Individuals younger than 25 years were excluded from the study. We also collected sociodemographic data for all 3 patient subgroups, including information on age, sex, race/ethnicity and region of residence. Patients were divided into 3 age groups: elderly (age ≥65 years), middle-aged adults (45-64 years), and young adults (25-44 years). Race/ethnicity was used to examine racial disparities. Based on the database, patients were divided into Hispanic, non-Hispanic black, non-Hispanic white, and non-Hispanic Asian groups. We also classified counties into urban (large metro [≥1 million], medium/small metro [50,000-999,999]) and rural (micropolitan and noncore [nonmetropolitan counties that did not qualify as micropolitan: <50,000]) counties. All covariates were obtained at the county level and linked with age-adjusted DD-related mortality rates to form the final dataset for analysis. All the data sources are presented in Tables 1-3 and Supplementary Tables 1-3.

Table 1 Age-adjusted mortality rates per 100,000 for all causes of deaths associated with diverticular diseases (1999-2020)

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Table 2 Age-adjusted mortality rates per 100,000 for all causes of deaths associated with diverticular diseases before (2016-2019) and after COVID-19 (2019-2022)

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Table 3 Age-adjusted mortality rates per 100,000 for digestive system related deaths associated with diverticular diseases before (2016-2019) and after COVID-19 (2019-2022)

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To provide meaningful comparisons across demographic groups and over time, age-adjusted mortality rates (AAMR) were calculated and presented as deaths per 100,000 people, standardized to the 2000 US population. This adjustment accounted for variations in age distribution, enabling more accurate comparisons between the groups.

Statistical analysis

Age-adjusted mortality rates were obtained from CDC WONDER and calculated using the direct method, which applies age-specific death rates to the US standard population age distribution in 2000. This produced a weighted average of age-specific death rates, where the weight represented a fixed population by age, allowing the comparison of relative mortality risk across populations with different underlying age structures over time. According to the National Center for Health Statistics recommendations, 2000 was considered the reference year for the standard population [8]. We quantified the association between the pandemic and DD-related deaths by calculating the percentage difference between the projected and observed mortality rates. A stratified analysis was performed according to the strata of individual-level demographic characteristics: age, sex, race/ethnicity and county rurality. Linear regression models were then fitted to identify county-level factors associated with age-adjusted DD-related mortality. Finally, a sensitivity analysis was conducted to evaluate the potential time trends in the geographic disparity in DD-related mortality. First, the cohort was divided into 2 equal 4-year periods (2016-2019 and 2019-2022), and similar methods were applied to assess geographic disparities in age-adjusted mortality rates. To enrich for robustness, we performed a sensitivity analysis by setting DD as the underlying (primary) cause of death. Statistical analyses were performed using the CDC WONDER database (age standardization) and R version 4.0.2 (data cleaning and management, and graphic creation).

Ethical considerations

This study involved human subjects; however, as this cross-sectional study used de-identified publicly available data from the CDC WONDER platform, the Western Institutional Review Board provided a waiver to CDC WONDER in accordance with the Health Insurance Portability and Accountability Act (HIPAA) and applicable federal regulations, as it utilizes aggregate counts and there is no access to protected health information from the participating healthcare organizations. Thus, informed and written patient consent was not required or feasible, in accordance with the Common Rule. Moreover, CDC WONDER suppresses the number of patients to the nearest 10 for analytic purposes to fortify protected health information. This study followed the STROBE reporting guidelines [9]. The study was conducted in compliance with the ethical standards of the responsible institution on human subjects, as well as with the Helsinki Declaration.

Results

Overall mortality trends

From 1999-2020, 115,009 deaths (Table 1) in the USA were attributed to DD, resulting in an AAMR of 2.4 per 100,000 population. Among these, 70,648 deaths (Supplementary Table 1) were linked to DGS conditions (AAMR 1.5, 95% confidence interval [CI] 1.5-1.5), and 17,405 deaths (Supplementary Table 2) were associated with CVS conditions (AAMR 0.4, 95%CI 0.3-0.4). The mortality trends for DD were stable between 1999 and 2016, followed by a slight increase in AAMR from 2016-2020, with notable variations observed across the demographic and geographic categories.

It is important to interpret these mortality figures in light of the potential misclassification of the death certificate data. The reliance on the underlying cause of death may exclude cases where diverticular disease was a significant contributor, but not the coded primary cause. Conversely, COVID-19, when listed on the certificate, was coded as the underlying cause in the vast majority of cases (~95%), which may partially account for the rise in non-diverticular coded causes during the pandemic period.

Trends by sex

Mortality rates were consistently higher among females than among males across all categories. The AAMR for females was 2.6 (95%CI 2.6-2.6), compared to 2.1 (95%CI 2.0-2.1) in males (Fig. 3). Similarly, DGS-related deaths were more frequent among females (AAMR 1.6, 95%CI 1.6-1.7) compared to males (AAMR 1.2, 95%CI 1.2-1.2) (Supplementary Fig. 1). CVS-related deaths also showed higher rates in females (AAMR 0.4, 95%CI 0.4-0.4) compared to males (AAMR 0.3, 95%CI 0.3-0.3) (Supplementary Table 2).

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Figure 3 Age-adjusted mortality rate per 100,000 for all causes related deaths of diverticular disease (1999-2020) by: (A) sex, age categories, Hispanic/non-Hispanic origins, and race; (B) census regions and states within USA

Trends by age group

The elderly population (≥65 years) exhibited the highest mortality rates across all cause categories, with an AAMR of 11.1 (95%CI 11.1-11.2) for all causes (Table 1; Fig. 3), 6.8 (95%CI 6.7-6.8) for DGS (Supplementary Table 1; Supplementary Fig. 1), and 1.7 (95%CI 1.7-1.8) for CVS-related deaths (Supplementary Table 2). Middle-aged adults (45-64 years) displayed lower mortality rates, with an AAMR of 0.6 (95%CI 0.6-0.6), while young adults (25-44 years) had the lowest AAMR at 0.1 (95%CI 0.1-0.1).

Trends by race and ethnicity

Significant racial disparities in DD-related mortality (Table 1 and Supplementary Table 1 and 2; Fig. 3 and Supplementary Fig. 1) were also observed. White individuals had the highest overall mortality rate (AAMR 2.5, 95%CI 2.5-2.5), followed by black individuals (AAMR 2.1, 95%CI 2.1-2.1). Hispanic populations exhibited lower overall mortality rates (AAMR 1.7, 95%CI 1.7-1.8) compared to non-Hispanic individuals (AAMR 2.5, 95%CI 2.4-2.5). Asian populations had the lowest mortality rates (AAMR 0.8, 95%CI 0.8-0.9), indicating significant interethnic variability (Fig. 3).

Geographic distribution

Geographic analysis revealed marked variations in the mortality rates (Table 1 and Supplementary Tables 1 and 2; Fig. 3 and Supplementary Fig. 1). The Midwest and West regions reported the highest overall AAMR (2.6, 95%CI 2.5-2.6), while the South and Northeast regions had slightly lower rates (AAMR 2.3, 95%CI 2.3-2.3). Regarding DGS-related deaths (Supplementary Table 1; Supplementary Fig. 1), the West exhibited the highest AAMR (1.6, 95%CI 1.6-1.7), followed by the Midwest. Rural areas, particularly non-metro-micropolitan regions, experienced the highest AAMR (2.9, 95%CI 2.9-3.0), whereas large central metropolitan areas reported lower rates (AAMR 2.3, 95%CI 2.2-2.3).

Pre- and post-COVID-19 trends

Temporal analysis comparing the pre-COVID-19 (2016-2019) and post-COVID-19 (2019-2022) periods demonstrated an increase in DD-related mortality (Table 2 and 3, Supplementary Table 3; Figs. 4 and 5, Supplementary Fig. 2,3). The overall AAMR rose from 1.8 (95%CI 1.8-1.9) in 2016-2019 to 2.0 (95%CI 2.0-2.1) in 2019-2022. The increase was more pronounced in females (2.0-2.2) than in males (1.6-1.8). Elderly individuals experienced the largest post-pandemic increase in AAMR, rising from 8.3 (95%CI 8.1-8.4) to 9.0 (95%CI 8.9-9.1).

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Figure 4 Age-adjusted mortality rate per 100,000 for all causes related deaths of diverticular disease before Covid-19 (2016-2019) by: (A) sex, age categories, Hispanic/non-Hispanic origins, and race; (B) census regions and states within USA

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Figure 5 Age-adjusted mortality rate per 100,000 for all causes related deaths of diverticular disease after Covid-19 (2019-2022) by: (A) sex, age categories, Hispanic/non-Hispanic origins, and race; (B) census regions and states within USA

Digestive and circulatory system mortality

DGS-related mortality remained the predominant cause of death in patients with DD (Supplementary Table 1; Supplementary Fig. 1), with an AAMR of 1.5 (95%CI 1.5-1.5) across the study period. The AAMR for CVS-related deaths (Supplementary Table 2) was lower at 0.4 (95%CI 0.3-0.4). The Midwest and West regions had higher DGS-related mortality, with the highest AAMR reported in non-metropolitan areas (Fig. 5). Conversely, CVS-related mortality was highest in rural areas, particularly in non-core regions (Supplementary Table 2).

Discussion

This study provides a comprehensive analysis of the trends and disparities in DD-related mortality in the USA from 1999-2020, with a particular focus on the impact of the COVID-19 pandemic. The findings reveal significant demographic and geographic variations in DD-related mortality, underscoring persistent health inequities and the compounded challenges posed by the pandemic. Although the study includes mortality data from 2020, the primary pre- vs. post-COVID analysis utilizes trend comparisons from 2016-2019 and 2019-2022. Thus, we acknowledge that the effects beyond 2020 are only inferred from these modeled estimates, as full death certificate data for 2021-2022 were unavailable at the time of data extraction.

DD remains an important public health problem in the USA. Overall, from 1999-2020, the AAMR for deaths associated with DD was 2.4 per 100,000 individuals. Conditions related to DGS accounted for the majority of deaths. Deaths related to CVS are relatively rare but notable. This finding agrees with earlier research reporting on complications of DD, such as diverticulitis and diverticular bleeding, perforation and peritonitis, which have been identified as a leading cause of gastrointestinal-related admissions and mortality in DD patients, thus contributing to considerable healthcare costs and morbidity [2].

Sex-related mortality differences were present, with higher mortality rates among females than males. Our analysis showed that females had higher mortality rates due to DD than males (AAMR 2.6 vs. 2.1). This observation is in agreement with previous studies that reported approximately 70% of DD-related deaths in women [10]. The reasons for this have not yet been determined, but may include differences in biological (e.g., hormonal influence), behavioral and healthcare utilization factors. Females have been shown to experience more frequent complications such as chronic diverticulitis, and may thus be more likely to seek medical care, thereby increasing the likelihood of diagnosis and attribution to DD.

Age was confirmed as a strong predictor of mortality; for all causes studied, there was higher mortality among the elderly age group (≥65 years), with an AAMR for all causes of 11.1. This is not a surprising result, since the prevalence of diverticulosis and its complications increases with age. This result indicates that comorbid conditions add to the aggravating nature of aging in outcomes pertaining to DD. Studies have shown that the incidence of diverticulitis has increased over time, especially among older adults, leading to more hospitalizations and increased healthcare utilization [1]. Furthermore, the increased vulnerability of older adults to DGS and CVS complications underlines the need for targeted interventions, with particular emphasis on the management of comorbid conditions and timely care.

There were significant racial and ethnic disparities in DD-related mortality, with white individuals having the highest mortality rate (AAMR 2.5), followed by black individuals (AAMR 2.1), whereas Asian populations had the lowest mortality rates. Hispanic populations also had lower AAMRs than non-Hispanic populations. These findings agree with those of other studies that have shown higher complication rates and mortality from DD among whites, possibly as a result of genetic predisposition, dietary patterns and healthcare access. These disparities may be related to underlying socioeconomic status, access to healthcare, dietary habits and prevalence of comorbid conditions. To reduce these disparities, focused public health interventions are required to increase access to care and to foster health equity. However, mortality rates in minority ethnic groups may be underestimated because of deficiencies in health care and diagnostics. The persistence of disparities in outcomes between Hispanic and non-Hispanic groups requires further investigation to uncover possible barriers to equal care.

Geographically, DD mortality also showed deep disparities. Our geographic analysis identified the Midwest and West regions bearing the highest overall AAMRs of 2.6, while rural areas, and specifically the non-metropolitan-micropolitan areas, had the highest AAMR (2.9), indicating the highest mortality burden. These findings suggest that access to health care and resource availability in rural areas may contribute to greater mortality rates. This may be partly due to limited access to specialized care, delayed diagnoses and constraints on healthcare resources in rural settings. Previous studies have also reported higher rates of advanced complications related to DD in rural areas, and improving infrastructure and access to healthcare in these areas is crucial for reducing these disparities.

The COVID-19 pandemic has brought about unprecedented challenges in DD management, exacerbating the massive burden of healthcare delivery. Our study demonstrated an increasing trend in mortality due to DDs in the post-COVID period: AAMRs increased from 1.8 to 2.0. This rise was more evident among older age groups and rural populations, possibly due to reduced access to healthcare services during the pandemic. A substantial reduction in the hospitalization of patients with diverticulitis during the pandemic has been observed, with increasing severity among cases presenting to emergency departments, according to previous studies [4]. Moreover, routine healthcare utilization was reduced during the pandemic, and delays in seeking medical care due to lockdowns and fear of contracting the virus probably further worsened the severity of DD presentations and may have resulted in more complicated presentations of DD [5]. Moreover, the proinflammatory and hypercoagulable states associated with COVID-19 might have contributed to worse outcomes in patients with DD.

The present study took advantage of strong national data from the CDC WONDER database, which has guaranteed comprehensive coverage of DD-related mortality trends over a period of 2 decades. The use of AAMRs has allowed for meaningful comparisons across diverse demographic and geographic regions. The major strength of our study is the comprehensive analysis of national mortality data over an extended period, which allowed us to assess long-term trends in mortality rates and the impact of the COVID-19 pandemic.

This study had several limitations. The analysis was based on death certificates, which may introduce misclassification bias, since DD-related deaths may be underreported or attributed to other causes—particularly when other acute conditions such as sepsis or cardiovascular events are present. Our reliance on administrative cause-of-death data from death certificates is a recognized limitation, and we urge cautious interpretation of causal attributions. In addition, the analysis did not account for potential confounders, including individual-level factors such as socioeconomic status, healthcare access or dietary patterns, which could influence mortality trends. Although the post-COVID-19 period was defined as 2019-2022, our dataset contained finalized mortality records only up to 2020. Therefore, our interpretations of post-COVID trends are partly extrapolative and should be treated with caution. We also recognize that our dataset cannot fully disentangle deaths primarily caused by DD from those in which it was a contributing factor, particularly when COVID-19 was also involved. While we included both underlying and contributing causes where possible, the CDC guidelines designate only 1 underlying cause per death, potentially underestimating the burden of comorbid conditions.

Despite advances in diagnosis and management, mortality rates for DD remain disproportionately high among elderly, female and non-Hispanic white populations, with significant geographic disparities. The COVID-19 pandemic has further amplified these inequities, underscoring the importance of targeted public health efforts to address the unique needs of the vulnerable populations. Therefore, future research should focus on identifying modifiable risk factors and developing strategies to enhance early detection, optimize management, and promote equitable access to care for all patients with DD across demographic and geographic settings. Future research should also consider leveraging multiple cause-of-death data and clinical linkage studies to better capture the full scope of DD mortality, particularly in the context of co-occurring infections, such as COVID-19.

Summary Box

What is already known:


  • Diverticular disease (DD) is a common gastrointestinal condition associated with significant morbidity and mortality, particularly among older adults

  • The prevalence of DD has been rising in the United States, with substantial healthcare costs due to hospitalizations and complications, such as diverticulitis

  • Prior studies have identified demographic disparities in DD-related outcomes, with higher mortality observed in females, the elderly, and non-Hispanic white populations

  • The COVID-19 pandemic has disrupted routine healthcare services, potentially worsening chronic disease outcomes, including those related to DD

What the new findings are:


  • Despite overall medical advances, DD-related mortality has increased in the post-COVID-19 era, particularly among elderly, female and rural populations

  • Rural and non-metropolitan regions experienced significantly higher age-adjusted mortality rates, highlighting geographic disparities in access to care

  • COVID-19-related disruptions appear to have exacerbated the existing demographic and geographic inequities in DD-related deaths, with notable increases in digestive and circulatory system-related mortality

  • This study offers a comprehensive, national-level analysis over 2 decades using CDC WONDER data, underscoring the urgent need for targeted interventions to mitigate disparities in DD outcomes

References

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2. Wheat CL, Strate LL. Trends in hospitalization for diverticulitis and diverticular bleeding in the United States from 2000 to 2010. Clin Gastroenterol Hepatol 2016;14:96-103.

3. Masoomi H, Buchberg BS, Magno C, Mills SD, Stamos MJ. Trends in diverticulitis management in the United States from 2002 to 2007. Arch Surg 2011;146:400-406.

4. Rolandelli RH, Soliman S, Chang GC, Nemecz AK, Nemeth ZH. How the COVID-19 pandemic affected the severity and clinical presentation of diverticulitis. J Am Coll Surg 2022;235:S14-S14.

5. Whiley P, Voo T. The impact of delayed acute diverticulitis presentations during the COVID-19 pandemic on acuity and surgical complexity in the long-term. Glob Surg 2022;8:1-5.

6. Centers for Disease Control and Prevention (CDC). Wide-ranging online data for epidemiologic research (WONDER) database. 2022. Available from:https://wonder. cdc.gov/[Accessed 13 June 2025].

7. Centers for Disease Control and Prevention (CDC). Wide-ranging online data for epidemiologic research (WONDER) database. Underlying cause of death 1999-2020. 2022. Available from:https://wonder.cdc.gov/wonder/help/ucd.html [Accessed 13 June 2025].

8. Klein RJ, Schoenborn CA. Age Adjustment Using the 2000 Projected U.S. Population. PsycEXTRA Dataset 2001.

9. von Elm E, Altman DG, Egger M, Pocock SJ, Gøtzsche PC, Vandenbroucke JP;STROBE Initiative. The Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) statement:guidelines for reporting observational studies. Int J Surg 2014;12:1495-1499.

10. Reddy VB, Longo WE. The burden of diverticular disease on patients and healthcare systems. Gastroenterol Hepatol (N Y) 2013;9:21-27.

Notes

Conflict of Interest: Ronnie Fass: Advisor – Takeda, Phathom Pharmaceuticals, GERDCare, Celexio, Dexcal, Carnot, Syneos, GIE Medical, BrainTree Labs/Sebela, Renexxion. Speaker: AstraZeneca, Takeda, Eisai Pharmaceuticals, Carnot, and Daewoong. The remaining authors did not have any conflict of interest to declare