Experimental studies involving randomization are always preferred over non-randomized studies.

Which of the following is a form of random sampling?

A 64-year-old patient presents with shoulder pain and restricted motion. Active ROM is limited and painful, and passive ROM is also limited but produces a different end-feel. What is your next best step to further assess the issue?

A patient with a recent elbow injury presents with 20–0–140° of elbow flexion. This ROM reading indicates:

Researchers usually use 95% confidence level to estimate population parameter from a sample value. Why not use 100% confidence level? Explain.

Read the question carefully. Select the best answer. Good luck!

The salivary glands and tear ducts are affected in

Selection bias is likely to occur in:

Which of these study designs cannot be used to test hypothesis or make causal inferences?

The role of the IRB (Institutional Review Board) in a research institution can be defined as: