Once Stakeholders Agree That Random Assignment to Groups Will Be

question 17

Multiple Choice

Once stakeholders agree that random assignment to groups will be permitted, it is crucial that

• A) the evaluator periodically monitor the outcome variables.
• B) stakeholders be permitted to make the actual group assignments.
• C) different rates of attrition among groups not be permitted to introduce bias.
• D) regression to the mean be carefully examined.

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Definitions:

Rebreathing Mask

A type of oxygen mask that allows a patient to re-inhale some of their exhaled air, often used for higher oxygen concentration delivery.

Bi-Level Positive Airway Pressure

A type of non-invasive ventilation that provides two levels of air pressure, one for inhalation and a lower one for exhalation, to support breathing.

Continuous Positive Airway Pressure

A treatment method using mild air pressure to keep the airways open, usually for people with breathing problems during sleep.

Expiratory Pressure

The pressure in the airways of the lungs during expiration, critical in respiratory care and ventilation settings.