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Related Concept Videos

Clinical Trials01:16

Clinical Trials

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
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Bioavailability Study Design: Single Versus Multiple Dose Studies01:11

Bioavailability Study Design: Single Versus Multiple Dose Studies

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Bioavailability studies are essential for understanding how a drug is absorbed, distributed, metabolized, and excreted in the body. These studies assess the extent and rate at which the active pharmaceutical agent becomes available at the site of action. The design of bioavailability studies can involve single-dose or multiple-dose regimens, each with distinct advantages and limitations.Single-dose studies are the preferred approach due to their simplicity and reduced drug exposure for...
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Bioavailability Study Design: Healthy Subjects Versus Patients01:15

Bioavailability Study Design: Healthy Subjects Versus Patients

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Bioavailability studies are essential for evaluating a drug's therapeutic efficacy and understanding its absorption patterns under various physiological conditions. Conducting such studies on target patient populations provides more relevant data by simulating real-world disease states. However, practical challenges often necessitate the use of young, healthy adult volunteers as study subjects.Patients may exhibit altered drug absorption patterns due to the effects of the disease itself,...
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Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Parentral Nutrition: Centeral and Peripheral Parental Nutrition01:27

Parentral Nutrition: Centeral and Peripheral Parental Nutrition

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Parenteral Nutrition (PN) delivers essential nutrients directly into the bloodstream, bypassing the digestive system. It is commonly used for individuals with severe digestive disorders or conditions that prevent normal nutrient absorption.
PN can be administered through two primary routes:
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CPN involves delivering a high concentration of nutrients through a large vein. This is typically achieved using a Peripherally Inserted Central Catheter (PICC) or,...
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Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs01:15

Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs

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Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...
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Related Experiment Video

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Concept Development and Use of an Automated Food Intake and Eating Behavior Assessment Method
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Theory-driven process evaluation of a complementary feeding trial in four countries.

Jamie E Newman1, Ana Garces, Manolo Mazariegos

  • 1Statistics and Epidemiology, RTI International, Research Triangle Park, NC 27709, USA, Multidisciplinary Health Institute, Francisco Marroquin University, Guatemala City 01011, Guatemala, Institute for Nutrition of Central America and Panama, Guatemala City 01011, Guatemala, Department of Pediatrics, Section of Nutrition, University of Colorado Denver, Aurora, CO 80045, USA, Centre for Infectious Disease Research in Zambia, Lusaka 34681, Zambia, Kinshasa School of Public Health, Kinshasa, Democratic Republic of Congo, Department of Community Health Science and Family Medicine, Aga Khan University Medical College, Karachi 74800, Pakistan, Department of Pediatrics/Division of Neonatology, University of Alabama at Birmingham, Birmingham, AL 35233, USA, Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA, University Teaching Hospital, Lusaka 34681, Zambia, Obstetrics and Gynecology, Columbia University, New York, NY 10027, USA and Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Rockville, MD 20852, USA.

Health Education Research
|January 9, 2014
PubMed
Summary

This study on infant complementary feeding found that increased message recall positively impacted infant growth, regardless of feeding type. This suggests early, comprehensive interventions are crucial for preventing stunting in impoverished areas.

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Area of Science:

  • Global Health
  • Nutritional Science
  • Public Health Interventions

Background:

  • Complementary feeding is critical for infant growth and development.
  • Stunting remains a significant public health challenge in low-resource settings.
  • Previous interventions during complementary feeding have shown limited success in reversing stunting.

Purpose of the Study:

  • To conduct a theory-driven process evaluation of a cluster randomized controlled trial on complementary feeding.
  • To examine the impact of two feeding types (meat vs. fortified cereal) on infant growth across four countries.
  • To explore factors influencing caregiver adherence to infant feeding recommendations.

Main Methods:

  • Cluster randomized controlled trial with process evaluation components.
  • Analysis of process indicators for 1236 infants using chi-square tests.
  • Exit interviews with 219 caregivers and 45 intervention staff.
  • Multivariate regression to assess the relationship between caregiver scores and infant linear growth velocity.

Main Results:

  • Few significant differences were observed between the meat and fortified cereal complementary feeding groups.
  • Increased caregiver recall of study messages was positively associated with increased infant linear growth velocity (P < 0.05).
  • The trial's lack of effect on stunting was not attributable to group differences or protocol implementation inconsistencies.

Conclusions:

  • Process evaluation indicates high fidelity and minimal group differences, supporting the main trial's findings.
  • Limited impact of complementary feeding interventions on stunting highlights the need for earlier, comprehensive approaches.
  • Message recall is an important factor influencing infant growth outcomes during the complementary feeding period.