Clinical trials: Retrospective Studies
Hepatitis B
Hepatitis B Seroepidemiology Among Young Adults
Taiwan has launched a successful nationwide neonatal hepatitis B immunization since July 1, 1984. It successfully decreased the incidence of hepatitis B virus infection, the hepatitis B carrier rate as well as liver diseases…
- Trial name
- NCT01973582
- Where
- Taiwan
- Volunteers
- 6,000 people, healthy volunteers welcome
- Sponsor
- National Taiwan University Hospital
SAR-CoV-2, Cellular Immune Response
Study of Immune Response in Subjects Vaccinated Against SARS-CoV-2 Infection
Twelve months after the first SARS-CoV-2 cases in Wuhan, the FDA approved the first COVID-19 vaccine (Pfizer-BioNTech). Early studies on healthcare workers showed that antibody levels, especially against the Spike protein…
- Conditions
- SAR-CoV-2, Cellular Immune Response, Antibody Response
- Trial name
- BioVAC-immunit (NCT07049497)
- Testing
- Evaluation of the T cell response in terms of IFN-γ measured by ELISpot
- Where
- Italy
- Volunteers
- 127 people, healthy volunteers welcome
- Sponsor
- IRCCS San Raffaele
Cutaneous Vasculitis
IgA-positive Versus IgA-negative Immune Complex Vasculitis
Cutaneous vasculitis due to vascular deposition of large circulating immune complexes is a disease frequently seen by general practitioners and dermatologists.
- Trial name
- NCT01815190
- Where
- Germany
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- University Hospital Muenster
Infertility
Drop-out of Infertile Couples: a Large Single Center Experience Over 10 Years
Conducted at a single-center, this prospective-retrospective study focused on all couples who initiated their journey at the Fertility Center of Humanitas Research Hospital, Rozzano (Milan), Italy.
- Trial name
- dropout (NCT06344585)
- Testing
- Drop out patients who had their first access in 2021 were additionally asked to answer to a phone -call questionnaire to assess their motivation of discontinuation
- Where
- Italy
- Volunteers
- 24,773 people, healthy volunteers welcome
- Sponsor
- Istituto Clinico Humanitas
Complex Dyslipidemia
A Observational Study to Evaluate Lipid-lowering Drug Its Effect on Parameters in Dyslipidemia of Type 2 Diabetes.
1. Target disease: Patients with combined dyslipidemia accompanied by type 2 diabetes who has done exogenous visit or hospitalization from Jan 2010 to June 2014. 2. Study objective: 1.
- Trial name
- NCT02382159
- Where
- South Korea
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Yooyoung Pharmaceutical Co., Ltd.
Skin Laxity
Retrospective Evaluation of Combination Treatment With the Ulthera System
A retrospective study to evaluate the Ulthera® System for its potential interaction with toxins and fillers. Up to 500 subjects will be enrolled.
- Trial name
- NCT02444169
- Testing
- Ultherapy, Incobotulinumtoxin A, Radiesse
- Where
- 5 sites in United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- Ulthera, Inc
Immediate Implant Placement
Socket Evaluation System to Predict Labial Bone Formation Around Immediate Implants. A Retrospective Cone Beam Computed Tomography Analysis.
Palate implant placement in extraction sockets, with a minimum of 2 mm between the implant and the inner side of the facial socket wall, has been advised as a step towards a 3D restorative-driven posture.
- Trial name
- NCT06246253
- Testing
- Virtual implant placement following safe angle concept, actual implant placement following safe angle concept
- Where
- Egypt
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Misr International University
Insurance Status/Stability
IMPACCT for Kids' Care
Health insurance is important for children. Public insurance programs are available to many children, but some families report being confused about how to get and keep this insurance.
- Trial name
- IMPACCT (NCT02298361)
- Testing
- Health insurance outreach IT tools
- Volunteers
- 27,251 people, healthy volunteers welcome
- Sponsor
- OCHIN, Inc.
Spasticity
Retrospective Real-Life Study From One Brazilian Reference Center Assessing Long-Term Experience In The Treatment Of Adult Spasticity With AbobotulinumtoxinA
The aim of the study is to describe the long-term use of abobotulinumtoxinA (Dysport®) in adult subjects affected with upper limb spasticity (ULS) +/- lower limb spasticity (LLS) who received treatment with Dysport® for a minimum…
- Trial name
- RETURN (NCT04446702)
- Where
- Brazil
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Ipsen
Dental Prosthesis, Implant-Supported
A Retrospective Data Collection on NobelProcera® Zirconia Implant Bridges from 4 to 14 Units.
This is a retrospective multicenter data collection in which clinical and radiographic data on implant zirconia bridges are collected from partially or fully edentulous subjects consecutively treated with at least one 4- to…
- Trial name
- NCT06600451
- Testing
- observational study, no intervention is required
- Where
- Switzerland
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Nobel Biocare
Chronic Prostatitis With Chronic Pelvic Pain Syndrome
Chronic Prostatitis/Chronic Pelvic Pain Syndrome Patients
Chronic prostatitis/chronic pelvic pain syndrome (CPPS) is a common health problem among men and can cause severe quality of life.
- Trial name
- NCT06016595
- Testing
- Chronic prostatitis/chronic pelvic pain syndrome
- Where
- Turkey (Türkiye)
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- Hisar Intercontinental Hospital
Peri-Implantitis, Implant Expulsion
Evaluation of the Novel Implant Disease Risk Assessment : a Retrospective Study (IDRA)
Given the novelty of this risk assessment tool, this study will be interested in evaluating its effectiveness through a retrospective approach.
- Trial name
- IDRA (NCT04888572)
- Testing
- Peri-Apical X-ray
- Where
- Lebanon
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Saint-Joseph University
ERAS, Pediatric ALL
Pediatric Enhanced Recovery After Cardiac Surgery
Identify our institution's current perioperative management strategies for pediatric cardiac surgery patients. Identify predictive factors for receiving perioperative care following P-ERACS strategies.
- Conditions
- ERAS, Pediatric ALL, Congenital Heart Disease
- Trial name
- PERCS (NCT05665712)
- Testing
- enhanced recovery
- Where
- Canada
- Volunteers
- 483 people, healthy volunteers welcome
- Sponsor
- University of Alberta
Pulmonary Embolism Acute
Pulsatile Electrical Impedance Tomography for Diagnosis and Monitoring of Acute Pulmonary Embolism
This multicenter observational diagnostic study aims to evaluate pulsatile electrical impedance tomography (EIT) for the diagnosis and monitoring of acute pulmonary embolism.
- Trial name
- EIT-PE (NCT07724197)
- Testing
- Pulsatile Electrical Impedance Tomography
- Where
- 4 sites in China
- Volunteers
- 275 people, healthy volunteers welcome
- Sponsor
- Beijing Tsinghua Chang Gung Hospital
Bloodloss in Pregnancy
Evaluation of Peripartum Blood Loss and Postpartum Anaemia in Macrosomia & Gemini
Anaemia in pregnant women occurs at a haemoglobin (Hb) concentration <11 g/dL and treatment is essential to prevent increased maternal morbidity, fetal morbidity and mortality.
- Trial name
- NCT06201910
- Testing
- Observation of Blood loss
- Where
- 2 sites in Germany
- Volunteers
- 575 people, healthy volunteers welcome
- Sponsor
- Goethe University
SARS-CoV2 Infection, COVID-19 Testing
Generic Testing of Antigen Tests for COVID-19 in Denmark
To evaluate the analytical and clinical sensitivity and specificity of antigen tests performed as oropharyngeal swabs, outer nasal swabs, saliva swabs or breath tests including self-tests for SARS-CoV-2 towards standard RT-PCR…
- Trial name
- NCT04913116
- Testing
- Comparison of antigen tests with RT-PCR as reference method
- Where
- 3 sites in Denmark
- Volunteers
- 4,000 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Infertility Assisted Reproductive Technology, Oocyte Retrieval
ART Cycle Outcomes When Only 1 to 3 Oocytes Are Retrieved
This is a monocentric retrospective observational study. The study focuses on the women who underwent Assisted Reproductive Technology (ART) cycles with poor ovarian response (POR), defined as <4 oocytes retrieved.
- Trial name
- POR (NCT06950476)
- Testing
- Oocyte Retrieval
- Volunteers
- 3,761 people, healthy volunteers welcome
- Sponsor
- Istituto Clinico Humanitas
Breast Cancer
Multi-Reader, Multi-Case, Cross-Over, Retrospective Study to Evaluate Effectiveness of Lunit INSIGHT DBT
This study aims to evaluate Effectiveness of Lunit INSIGHT DBT in the assistance of detection and diagnosis of breast cancer during 3D mammography interpretation
- Trial name
- NCT05716958
- Testing
- Digital Breast Tomosynthesis
- Where
- United States
- Volunteers
- 262 people, healthy volunteers welcome
- Sponsor
- Lunit Inc.
Healthy, CVA
Development of Automated Analysis to Electroencephelogram (EEG) Data in Patients Treated at the Sagol Hyperbaric Medicine and Research Center at the Years 2017-2019.
DELPhI software developed for the analysis of EEG recordings in response to magnetic stimulation in relation to clinical data.
- Conditions
- Healthy, CVA, Hemorrhage, TBI (Traumatic Brain Injury)
- Trial name
- NCT04095377
- Testing
- No intervention, this is a retrospective study.
- Where
- Israel
- Volunteers
- 875 people, healthy volunteers welcome
- Sponsor
- QuantalX Neuroscience
Risk Stratification
QRS Microfragmentation in ECG as Predictor of Mortality and Morbidity - a Retrospective Analysis
Over the past decades, several ECG-based parameters have been identified as independent predictors of worsened prognosis in affected patients.
- Trial name
- NCT06011590
- Testing
- No intervention.
- Volunteers
- 150,000 people, healthy volunteers welcome
- Sponsor
- Medical University Innsbruck