Examlex
The most common strain of HIV evolved from _____ virus(es) .
Quasi-Experimental Designs
Study frameworks that aim to identify causal relationships but do not incorporate random allocation to intervention and comparison groups.
Nonrandomly Formed Groups
Groups in a study that are created based on criteria other than random assignment, which can introduce biases or preexisting differences between groups.
One-Group Posttest-Only Design
An experimental design where a single group is exposed to an intervention and then tested, lacking a control group for comparison.
Uninterpretable Nonequivalent Groups Designs
Research designs that lack clear control groups or equivalency between groups, making findings difficult to interpret accurately.
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