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Ascertainment Bias
A possible form of the bias, mainly in retrospective studies, which arises from a relationship amongst the exposure to the risk factor and the probability of detecting the event of interest. In a study comparing women by means of cervical cancer and a control group, for instance, an excess of oral contraceptive use among the cases might possibly be due to more regular screening for disease prevailing among the women are known to be taking the pill.
A toothpaste company wants to know if its new products increases the length of time in between dentists visits for its uses. The company sets a target of 180 days to determine if i
Q1 Choose the option that is closest to the exact value of the probability P (30 ≤ X Q2 Choose the option that is closest to the approximate value of the probability P
A. Complete the correlation matrix table. B. Which variable (s) has the highest correlation coeffieient which is not a perfect correlation? C. Which variable (s) has the lowest cor
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charlie removes the 12 face cards from a standard deck of cards then shuffles the face cards together on their own. He selects 2 cards from the pile. The probability that the first
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Description of Sample at Baseline 1. Describe the sample characteristics and baseline values, comparing the two groups'characteristics. With any analysis, the first step
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