In a Study Investigating the Effect of Type of Operating

question 1

Multiple Choice

In a study investigating the effect of type of operating room mattress and surgical position on tissue interface pressures,the researchers used healthy young adult subjects.Which component of research design is most affected by this choice?

• A) Internal validity
• B) Mortality
• C) Instrumentation
• D) External validity

---

Definitions:

Clutch Pedal

A mechanical lever found in manual vehicles that the driver depresses to disengage the gearbox from the engine, allowing for gear changes.

Freeplay Dimension

The amount of allowable movement or slack in a mechanism before actual function begins, important for proper mechanical operation and safety.

Intermediate Plate

A part placed between other components to distribute pressure, support structures, or separate layers in machinery and equipment.

Drive Pins

are types of fasteners or components used to transmit motion or power from one part of a mechanical system to another, ensuring the components move together as intended.