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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
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Nursing interventions are chosen as part of the planning process to achieve patient outcomes. Once nursing diagnoses are determined, the goals and outcomes are specified, then the nursing interventions are selected and individualized according to the patient's situation.
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Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
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Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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Related Experiment Video

Updated: Dec 31, 2025

A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program
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A Novel Digital Platform for a Monitored Home-based Cardiac Rehabilitation Program

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A randomized trial of a behavioral intervention to decrease hospital length of stay by decreasing bedrest.

Juliana Tolles1,2, Gabriel Waterman3, Charles E Coffey4,5

  • 1Department of Emergency Medicine, Harbor-University of California Los Angeles (UCLA) Medical Center, Torrance, California, United States of America.

Plos One
|January 11, 2020
PubMed
Summary
This summary is machine-generated.

Hospitalized patients did not show improved functional status or reduced length of stay with a behavioral intervention and recliner chairs. Further active interventions are needed to combat functional decline in inpatients.

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Area of Science:

  • Clinical Medicine
  • Hospital Management
  • Patient Outcomes

Background:

  • Hospitalized patients frequently experience functional decline due to prolonged bed rest.
  • Early mobilization strategies can improve outcomes but are often resource-intensive.
  • A pragmatic mobilization protocol was developed to reduce inpatient bed time.

Purpose of the Study:

  • To decrease the time hospital inpatients spend in bed.
  • To evaluate the effectiveness of a behavioral intervention and recliner chairs in reducing bed rest.

Main Methods:

  • A prospective, non-blinded, controlled clinical trial was conducted in an urban teaching hospital.
  • Inpatients received either a behavioral intervention (educational handouts) alone or in combination with recliner chairs.
  • Primary outcome was hospital length of stay; secondary outcome was functional status using the '6-Clicks' score.

Main Results:

  • A total of 6082 patient encounters were analyzed over a 6-month period.
  • Neither the behavioral intervention nor recliner chairs significantly decreased length of stay or improved functional status.
  • Median length of stay was 84 hours (control), 80 hours (behavioral), and 88 hours (behavioral + recliner).

Conclusions:

  • Educational handouts and recliner chairs did not effectively reduce bed rest, improve functional status, or shorten length of stay.
  • Active interventions beyond education and physical resources are necessary to mitigate functional decline in inpatients.
  • Further research is needed to identify effective strategies for reducing inpatient bed time and its consequences.