David A. Ramirez

ORCID: 0000-0003-0357-917X
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About
Contact & Profiles
Research Areas
  • Intraocular Surgery and Lenses
  • Retinal and Optic Conditions
  • Ocular Infections and Treatments
  • Traumatic Ocular and Foreign Body Injuries
  • Corneal surgery and disorders
  • Cancer survivorship and care
  • Palliative Care and End-of-Life Issues
  • Global Cancer Incidence and Screening
  • Economic and Financial Impacts of Cancer
  • Corneal Surgery and Treatments
  • Glaucoma and retinal disorders
  • Economics of Agriculture and Food Markets
  • demographic modeling and climate adaptation
  • Retinal and Macular Surgery
  • Childhood Cancer Survivors' Quality of Life
  • Insurance, Mortality, Demography, Risk Management
  • Fiscal Policy and Economic Growth
  • Trauma and Emergency Care Studies
  • Ophthalmology and Visual Health Research
  • Traditional Chinese Medicine Studies
  • Sinusitis and nasal conditions
  • Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Intracranial Aneurysms: Treatment and Complications
  • Heterotopic Ossification and Related Conditions
  • Skin and Cellular Biology Research

Lurie Children's Hospital
2025

Autonomous University of Yucatán
2024

Children's Hospital of Philadelphia
2023

University of Iowa
2020-2023

Mayo Clinic
2023

Direction de la Météorologie Nationale du Niger
2021

University of Iowa Hospitals and Clinics
2021

Palomar Health
2019-2020

Universidad de La Sabana
2020

University of California, San Francisco
2017-2019

Social media posts regarding measles vaccination were classified as pro-vaccination, expressing vaccine hesitancy, uncertain, or irrelevant. Spearman correlations with Centers for Disease Control and Prevention–reported cases differenced smoothed cumulative case counts over this period reported (using time series bootstrap confidence intervals). A total of 58,078 Facebook 82,993 tweets identified from 4 January 2009 to 27 August 2016. Pro-vaccination correlated the US weekly (Facebook:...

10.1177/1460458217740723 article EN Health Informatics Journal 2017-11-17

Lesbian, gay, bisexual, transgender, queer, and intersex (LGBTQI) individuals continue to face barriers accessing appropriate comprehensive healthcare. Compounding this problem, healthcare trainees report few training opportunities low levels of preparedness care for LGBTQI patients. In 2009, an interprofessional group students a faculty advisor at the University California, San Francisco, developed novel student-organized Health Forum medical, dental, pharmacy, nursing, physical therapy...

10.1080/10872981.2017.1306419 article EN cc-by Medical Education Online 2017-01-01

Almstedt, HC, Canepa, JA, Ramirez, DA, and Shoepe, TC. Changes in bone mineral density response to 24 weeks of resistance training college-age men women. J Strength Cond Res 25(4): 1098-1103, 2011-Osteoporosis is a chronic disease major public health concern. Characterized by low mass increasing risk for fracture, osteoporosis occurs greater extent Resistance mode exercise that can be used build peak during youth, thereby preventing later life. Our aim was evaluate the effectiveness protocol...

10.1519/jsc.0b013e3181d09e9d article EN The Journal of Strength and Conditioning Research 2010-11-06

Reducing surgery-related patient anxiety without under-emphasizing surgical risk is challenging for even the most experienced surgeon. The purpose of this study to identify specific anxieties faced by patients in hopes better informing preoperative surgeon-patient dialogue.Comprehensive and specialty ophthalmology clinics at University California, San Francisco.A prospective, survey-based which a pre- postoperative questionnaire was administered undergoing routine phacoemulsification....

10.2147/opth.s146135 article EN cc-by-nc Clinical ophthalmology 2017-11-01

The Effects of 24 weeks Resistance Training with Simultaneous Elastic and Free Weight Loading on Muscular Performance Novice Lifters purpose this investigation was to assess the effectiveness variable resistance as provided through elastic plus free weight techniques in college aged males females. Twenty novice lifters were randomly assigned a traditional only (6 5 females) or band group (5 9 more normally active controls 4 females), recruited maintain normal activity for duration study. No...

10.2478/v10078-011-0043-8 article EN Journal of Human Kinetics 2011-09-01

<h3>Importance</h3> Undertreated patient symptoms require approaches that improve symptom burden. <h3>Objective</h3> To determine the association of a lay health worker–led screening and referral intervention with burden, survival, care use, total costs among Medicare Advantage enrollees new diagnosis solid or hematologic malignant neoplasms. <h3>Design, Setting, Participants</h3> This quality improvement study conducted at 9 community oncology practices from November 1, 2016, to October 31,...

10.1001/jamanetworkopen.2020.1023 article EN cc-by-nc-nd JAMA Network Open 2020-03-16

Although the flipped classroom model provides an effective way to teach ophthalmology medical students, there are concerns that it overburdens learner. The purpose of this study was assess students' perceptions a case-based style compared with traditional didactic lecture series and evaluate effects learning on confidence in managing common ophthalmic complaints.We created interactive, curriculum. Paired pre- post-clerkship surveys were distributed students first last day 2-week clerkship....

10.5693/djo.01.2021.01.004 article EN Digital Journal of Ophthalmology 2021-02-01

Poor patient experiences and increasing costs from undertreated symptoms require approaches that improve patient-reported outcomes lower expenditures. We developed evaluated the effect of a lay health worker (LHW)-led symptom screening intervention on satisfaction, self-reported overall mental health, care use, total costs, survival.

10.1200/jop.19.00152 article EN JCO Oncology Practice 2019-09-24

Conjunctivitis is the most common ocular condition diagnosed in US emergency departments (EDs), accounting for almost one-third of all eye-related encounters.1 Because its generally nonemergent nature, understanding burden and timing conjunctivitis may allow preemptive triage to a less expensive health care setting.

10.1001/jamaophthalmol.2017.3319 article EN JAMA Ophthalmology 2017-09-14

BackgroundCorneal ulcers are a common cause of blindness in low-income and middle-income countries, usually resulting from traumatic corneal abrasions during agricultural work. Antimicrobial prophylaxis can help prevent ulcers, but delays the initiation therapy frequent. We aimed to assess whether community-based programme for ulcer prevention would reduce incidence ulceration.MethodsA cluster-randomised trial was performed village development committees (VDCs) Nepal. VDCs catchment area...

10.1016/s2214-109x(21)00596-9 article EN cc-by The Lancet Global Health 2022-03-15

Acute kidney injury (AKI) survivors have a dynamic posthospital course which warrants close monitoring. Remote patient monitoring (RPM) could be used to improve quality and efficiency of AKI survivor care. Objective: The objective this report was describe the development preliminary feasibility an RPM program launched in October 2021. Setting: Academic medical center. Patients: Patients enrolled were those who experienced during hospitalization underwent nephrology consultation....

10.1177/20543581231192746 article EN cc-by-nc Canadian Journal of Kidney Health and Disease 2023-01-01

<h3>Importance</h3> Mass azithromycin distributions may decrease childhood mortality, although the causal pathway is unclear. The potential for antibiotics to function as growth promoters explain some of mortality benefit. <h3>Objective</h3> To investigate whether biannual mass are associated with increased growth. <h3>Design, Setting, and Participants</h3> This cluster-randomized trial was performed from December 2014 until March 2020 among 30 rural communities in Boboye Loga departments...

10.1001/jamanetworkopen.2021.39351 article EN cc-by-nc-nd JAMA Network Open 2021-12-30

Because transmission of ocular strains Chlamydia trachomatis is greatest among preschool-aged children, limiting azithromycin distributions to this age group may conserve resources and result in less antimicrobial resistance, which a potential advantage areas with hypoendemic trachoma limited resources.To determine the efficacy mass children as strategy for elimination disease.In cluster randomized clinical trial performed from November 23, 2014, until July 31, 2017, thirty rural communities...

10.1001/jamanetworkopen.2022.28244 article EN cc-by-nc-nd JAMA Network Open 2022-08-23

Repair of retinal detachment frequently requires use intraocular gas. Patients are instructed to position themselves postoperatively appose the bubble break(s). We developed a novel wearable wireless positioning sensor, which provides real-time audiovisual feedback on accuracy positioning.Eight healthy volunteers wore sensor for 3 hours while maintain their head tilted toward 2 o'clock meridian with no feedback. Positioning was recorded. The subjects repeated experiment enabled.With...

10.2147/opth.s135128 article EN cc-by-nc Clinical ophthalmology 2017-05-01

Purpose Glaucoma screening can be performed by assessing the vertical-cup-to-disk ratio (VCDR) of optic nerve head from fundus photography, but VCDR grading is inherently subjective. This study investigated whether computer software could improve accuracy and repeatability assessment. Methods In this cross-sectional diagnostic study, 5 ophthalmologists independently assessed a set 200 disk images, with median grade used as reference standard for subsequent analyses. Eight...

10.1371/journal.pone.0220362 article EN cc-by PLoS ONE 2019-08-08

Medical shops in Nepal are a main point of treatment for many diseases including ophthalmic conditions. We sought to evaluate pharmaceutical shop worker knowledge corneal ulcers and abrasions. A from each 117 different pharmacies surrounding Bharatpur, Nepal, was presented four eye photographs (i.e., ulcer, abrasion, conjunctivitis, normal eye) asked about diagnosis management. Of participants, 86 (74%) identified conjunctivitis correctly but few were able identify abrasion (50/117; 43%) or...

10.4269/ajtmh.20-0555 article EN American Journal of Tropical Medicine and Hygiene 2020-07-21

10.1016/j.ajo.2020.07.028 article EN American Journal of Ophthalmology 2020-09-22

Purpose: To describe a case of TUBA1A -associated optic nerve hypoplasia and persistent fetal vasculature. Methods: Observational report. Results: A female, full-term infant was found to have Dandy–Walker malformation with cerebellar brainstem hypoplasia, ventriculomegaly, lissencephaly. Her ophthalmic examination notable for vasculature, vitreous hemorrhage, peripheral retinal nonperfusion. Subsequent genetic testing revealed variant. Conclusion: Persistent vascular abnormalities, may be...

10.1097/icb.0000000000001540 article EN Retinal Cases & Brief Reports 2023-12-18

10.1681/asn.2024njzq1nwv article EN Journal of the American Society of Nephrology 2024-10-01

6522 Background: To curb rising expenditures and improve patient-reported outcomes (PROs), we designed an intervention with patient, caregiver, provider, payer input. The is based on prior work using a lay health worker (LHW) to assess advanced cancer patients' symptoms. In this study, trained the LHW refer patients palliative care and/or behavioral services in response positive assessments expanded all stages. We implemented plan community oncology group serving elderly racially/ethnically...

10.1200/jco.2019.37.15_suppl.6522 article EN Journal of Clinical Oncology 2019-05-20
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