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What is the most effective contraception over the long run?
Treatments
Specific experimental conditions applied to groups in experimental research to determine their effect on an outcome of interest.
Experimental Data
Information gathered through systematic experimentation or observation, aimed at testing hypotheses or evaluating outcomes.
Survey Data
Information collected from respondents through questionnaires aimed at gathering insights on various topics.
Self-Selected Sample
A sample consisting of volunteers or individuals who choose themselves to participate in a research, possibly leading to bias.
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