In a(n) ____ trial, subjects are assigned to intervention alternatives by a method that is not random.
A)observational
B)cross-sectional
C) trend
D) nonrandomized controlled

Question

In a(n) ____ trial, subjects are assigned to intervention alternatives by a method that is not random.​
A)​observational
B)​cross-sectional
C) ​trend
D) ​nonrandomized controlled

Quizplus · Accepted Answer

In a nonrandomized controlled trial, subjects are not assigned to intervention alternatives by a random method, but rather by a pre-existing condition or personal choice. This can result in bias or confounding variables, but it is sometimes the only ethical or practical option for studying a particular intervention.

In A(n) ____ Trial, Subjects Are Assigned to Intervention Alternatives