About

Daniel Kim is a Professor in the Department of Public Health and Health Sciences at Bouvé College of Health Sciences, Northeastern University. His research focuses on public health and health sciences, contributing to the academic community through his role as a core faculty member. His work involves advancing knowledge in health-related fields, although specific research areas or projects are not detailed on the page.

Research topics

• Medicine
• Environmental health
• Political Science
• Internal medicine
• Pediatrics
• Demography
• Nursing
• Intensive care medicine
• Mathematics
• Economics
• Econometrics
• Psychiatry
• Geology
• Actuarial science
• Statistics
• Surgery
• Emergency medicine
• Geography
• Demographic economics

Selected publications

• From Mainframes to Machine Learning: Skill Gaps over the Technology Life Cycle

  SSRN Electronic Journal · 2026-01-01

  preprintOpen access
  PublisherDOI

• Impacts of SNAP benefit increases on US child food insufficiency during the COVID-19 pandemic

  Journal of Epidemiology & Community Health · 2025-12-03 · 3 citations

  articleOpen accessSenior author

  BACKGROUND: The COVID-19 pandemic reversed a decade of progress in reducing child food insufficiency in the United States. Congress implemented a universal 15% increase in Supplemental Nutrition Assistance Program (SNAP) benefits from January 2021 through September 2021 to address rising child food hardship. METHODS: We conducted a difference-in-differences analysis using US Census Bureau data to evaluate the impact of this temporary expansion on child food insufficiency. We compared 9776 SNAP participating households with 18 961 eligible non-participating households, examining changes before and during the benefit expansion period while accounting for demographic and economic characteristics. RESULTS: The expansion was associated with a 20% reduction in the odds of child food insufficiency among SNAP participants compared with eligible non-participants (OR = 0.80; 95% CI = 0.66 to 0.97). Hispanic-American households experienced a 39% reduction (OR = 0.61; 95% CI = 0.47 to 0.80), and households with six or more members showed a 33% reduction (OR = 0.67; 95% CI = 0.45 to 1.02). CONCLUSIONS: The 15% SNAP benefit expansion in 2021 effectively reduced child food insufficiency during the pandemic, with particularly strong protective effects among Hispanic-American and large households. These findings support a universal food benefit expansion improving child health needs during a national health and economic crisis.

  PublisherOA PDFDOI

• Potential-driven electrochemical clearing of ex vivo acidic corneal injuries

  2025-01-23

  articleOpen access

  Acidic corneal injuries pose a serious clinical challenge, often resulting in significant ocular damage and vision impairment. This study evaluates the efficacy of potential-driven electrochemical clearing (P-ECC) for treating acute acidic corneal injuries in ex vivo porcine eye models. To assess P-ECC effectiveness in clearing acidic corneal injuries, its impact on tissue structure, injury progression, and potential clinical applications. Ex vivo porcine eyes were subjected to 5M HCl to simulate acidic injuries, followed by irrigation with phosphate buffered saline (PBS). Mobile P-ECC treatment was applied using platinum electrodes (30 seconds per site). Efficacy was assessed through optical coherence tomography (OCT) imaging (∼35 frames per second) and second harmonic generation (SHG) imaging to analyze corneal clarity, thickness, and collagen organization before acid damage, after damage, and after P-ECC treatment. Irrigation with PBS served as a control. P-ECC successfully restored local optical clarity after HCl exposure. OCT imaging displayed the progression of HCl injury and post-ECC recovery of corneal clarity. SHG z-stack images indicated minimal collagen fibril rearrangement, reflecting improved clarity in post-treatment corneas. HCl-injured corneas immersed in PBS alone showed no restoration of clarity. P-ECC demonstrates potential as a treatment for acidic corneal injuries, effectively restoring clarity while modestly altering collagen fibril orientation without suggestion of irreversible matrix-level fiber damage. Further research is necessary to elucidate the underlying clearing mechanism and optimize electrical dosimetry and electrode design.

  PublisherOA PDFDOI

• Do carbon emissions affect the cost of capital? Primary versus secondary corporate bond markets

  Journal of Corporate Finance · 2025-11-29

  articleOpen access1st authorCorresponding

  National audience

  PublisherDOI

• 279 Host-Mediated Bacterial Interference to Prevent Epithelial Colonization by MRSA

  Journal of Investigative Dermatology · 2025-11-01

  articleOpen access1st authorCorresponding
  PublisherOA PDFDOI

• 63032 Sex Differences in Clinical Presentation and Melanoma-Specific Survival Among Cutaneous Melanoma Patients in the Veterans Affairs Population

  Journal of the American Academy of Dermatology · 2025-09-01

  article1st authorCorresponding
  PublisherDOI

• Racial-ethnic composition of U.S. school districts, wildfire smoke PM2.5 levels, and reduced in-person learning among schoolchildren and adolescents during the COVID-19 pandemic

  Preventive Medicine Reports · 2025-03-14

  articleOpen access1st authorCorresponding

  In 2023, the U.S. Biden administration called for an “all-hands-on-deck” response to address chronic absenteeism and disrupted learning among primary and secondary school students due to school closures and remote learning during the pandemic. To identify student populations that might benefit from interventions, this study examined the racial-ethnic composition of school districts as a predictor of wildfire smoke PM 2.5 levels and in-person student visits to schools. In a lagged cross-sectional study, multivariable logistic regression was employed to investigate school district quartiles of mean percentages of non-White students as predictors of: 1) mean levels of wildfire smoke PM 2.5 > 35 μg/m 3 during school days for grade 3–8 students; and 2) being above the median for the mean decline in in-person K-12 student attendance (vs. pre-pandemic) during the 2020–2021 and 2021–2022 school years. The highest (vs. lowest) quartile for the district-level percentage of non-White students predicted a nearly 3-fold higher odds (adjusted odds ratio, AOR = 2.78; 95 % CI = 2.07–3.74; P < .001) of high wildfire smoke exposure and 5-fold higher odds (AOR = 4.95; 95 % CI = 3.84–6.38; P < .001) of substantially reduced in-person learning levels. Successively higher odds for both outcomes were observed in higher quartiles ( P for trend < .001). Similar patterns were seen when percentages of Asian-, Black-, and Hispanic-American students were modeled simultaneously. Districts with higher percentages of non-White students showed elevated odds of high wildfire smoke PM 2.5 levels and distance learning. Distributing portable air filtration devices in these districts could be a cost-effective intervention to address these concomitant risks and mitigate learning loss among children and adolescents in the USA.

  PublisherDOI

• (123) The Accuracy of Penile Doppler Ultrasound in Corporal Veno-Occlusive Dysfunction Diagnosis

  The Journal of Sexual Medicine · 2025-11-01

  articleOpen access1st authorCorresponding

  Abstract Introduction Penile doppler ultrasound (PDUS) is the gold standard for diagnosing corporal veno-occlusive dysfunction (CVOD). Redosing and the administration of higher doses of vasoactive agents maximizes cavernosal smooth muscle relaxation which should optimize the reliability and reproducibility of the hemodynamic data obtained. Objective To evaluate the accuracy of PDUS in diagnosing CVOD. Methods Men failing PDE5 inhibitors (PDE5i) and ICI who underwent a PDUS constitute the study population. All patients received ICI doses of ≥50 units as part of an ICI (trimix or bimix) redosing protocol when penetration rigidity erection was not initially achieved during the test. All patients were retained in clinic for a period of up to an hour in order to evaluate their post-PDUS rigidity. CVOD was defined as an end-diastolic velocity (EDV) ≥5 cm/sec bilaterally. Erection quality was assessed with the erection hardness score (EHS), graded on a 1-4 scale (1 minimally tumescent; 2 tumescent but not enough for penetration; 3 sufficient for penetration but not completely rigid; 4 completely rigid). True positive CVOD was defined as EDV ≥5cm/sec bilaterally plus EHS &amp;lt;3 after PDUS; True negative CVOD EDV &amp;lt;5cm/sec bilaterally plus EHS ≥3 during and after PDUS. False positive CVOD EDV ≥5 cm/sec intra-procedure plus EHS ≥3 after PDUS. Sensitivity, specificity, positive predictive values (PPV), and negative predictive values (NPV) were calculated and reported. Results 722 patients were assessed, with a median age of 68 (IQR 62, 73) years. Within the cohort, 21% had diabetes, 36% had obstructive sleep apnea, 9% had coronary artery disease, 40% were smokers, 51% had radical prostatectomy, 33% had radiotherapy, and 26% had androgen deprivation. Median ICI dose was 100 (58, 100) units. Median EHS during PDUS was 2 (IQR 2, 3), with 58% having EHS 1-2 during PDUS study. Median EDV was 9.3 (IQR 5.4, 13.0) cm/sec, with 72% having CVOD on PDUS. 25% of the cohort required reversal, including 4 who needed aspiration. 63% were considered true positives for CVOD, and 9% were false positives. For the diagnosis of CVOD, the sensitivity and specificity were 85% and 64%, and the PPV and NPV were 88% and 59%, respectively. Conclusions PDUS with a redosing ICI protocol using high doses of vasoactive agents has a high PPV and sensitivity for the diagnosis of CVOD. Even when using high doses of vasoactive agents, 1/10 patients diagnosed with CVOD had a delayed rigid erection, negating the elevated EDV figures recorded during the PDUS. Disclosure No

  PublisherOA PDFDOI

• A critical analysis of the methodological limitations in trials of low-intensity shockwave therapy for erectile dysfunction

  Sexual Medicine Reviews · 2025-10-25 · 1 citations

  article

  INTRODUCTION: Low-intensity shockwave therapy (LiSWT) is a novel treatment option for patients with erectile dysfunction (ED). To date, numerous randomized controlled trials (RCTs) and cohort studies have been published. OBJECTIVES: To critically evaluate the methodology and limitations of the published studies on LiSWT for ED. METHODS: A literature search was performed. We excluded studies that compared and/or combined LiSWT to other therapies. In the context of multiple studies from the same center with identical populations and study design, we selected the studies with the largest patient population and/or longest follow-up. Attention was focused on patient demographics, device parameters, treatment protocols, endpoints, and follow-up schedules. RESULTS: 45 studies (25 cohort, 20 RCTs) using 9 different LiSWT devices were analyzed. Most studies excluded men with severe ED: 6 included men with pelvic surgery and/or radiation and 22 studies included phosphodiesterase 5 inhibitor non-responders. The population size for the cohort studies had mean 61.12 patients (SD 80.34), median 40.0 (IQR 27-54). In the RCTs, the mean per arm was 38.13 patients (SD 19.25), median 35 (IQR 23-42.5). Patients received between 3000 and 90 000 total shocks during the treatment courses, with 1-5 sessions per week and 2-10 application sites included. The most common endpoint was change in the International Index of Erectile Function. Only 17 trials evaluated objective endpoints, such as penile duplex Doppler ultrasound. Study follow-up duration ranged between 1 and 36 months with a median of 6 months. CONCLUSION: The methodology applied to the published LiSWT studies is remarkably heterogeneous, with a 30-fold difference in shock number and a 5-fold difference in weekly session number and number of application sites. These data emphasize the current inability to compare results across studies using nine different devices and disparate treatment protocols.

  PublisherDOI

• The colour of unaffordable household water: racial/ethnic inequalities in bills and shutoffs across local water districts in nine urban areas of the United States

  Local Environment · 2025-10-14 · 2 citations

  article
  PublisherDOI

Recent grants

• NIH Grant G13LM012056

  NIH · $98k · 2017

• NIH Grant R00HL089459

  NIH · $746k · 2014

• NIH Grant R03CA126398

  NIH · $162k · 2008

• Alzheimer's BACE1 inhibition regulates neuronal contactin function

  NIH · $6.9M · 1997–2020

• NIH Grant R21AG031483

  NIH · $412k · 2011

Frequent coauthors

• Theo Vos

  165 shared

• Dan J. Stein

  South African Medical Research Council

  161 shared

• Lalit Dandona

  156 shared

• Rakhi Dandona

  University of Washington

  152 shared

• Chuanhua Yu

  152 shared

• Christopher J L Murray

  University of Washington

  143 shared

• Maziar Moradi‐Lakeh

  131 shared

• Guoqing Hu

  126 shared

Labs

• The Institute for Experiential AIPI

Education

• Ph.D., Computer Science

  Northeastern University

  2005

• M.S., Electrical Engineering and Computer Science

  University of California, Berkeley

  2001

• B.S., Electrical Engineering and Computer Science

  University of California, Berkeley

  1999