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Subjects were children enrolled in a health maintenance organization.pdf
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Subjects were children enrolled in a health maintenance organization. At 18 months of age, each child was randomly given one of two types of vaccine against Haemophilus influenzae. Parents were asked to record any side effects on a card and mail it back after 2 weeks. What type of study is this? (Points: 2) Case-control study Concurrent cohort study Nonconcurrent cohort study Randomized trial Cross-sectional study Solution Experimental study because the investigators rather than the subjects themselves controlled the exposure.
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Subjects were children enrolled in a health maintenance organization.pdf
- Subjects were children enrolled in a health maintenance organization. At 18 months of age, each child was randomly given one of two types of vaccine against Haemophilus influenzae. Parents were asked to record any side effects on a card and mail it back after 2 weeks. What type of study is this? (Points: 2) Case-control study Concurrent cohort study Nonconcurrent cohort study Randomized trial Cross-sectional study Solution Experimental study because the investigators rather than the subjects themselves controlled the exposure
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