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Retinol (mmol/L) Vitamin A group Trace Group N 73 57 Year 0 Mean +/- sd 1.89 +/- 0.83 +/- 0.31 Year 3 Mean +/- sd 2.06 +/- 0.78 +/- 0.

Researchers found that among 133 participants in the Vitamin A group (males and females combined) who were in the normal range at baseline (<2.13 µmol/L), 15 were above the upper limit of normal at each of their last 2 consecutive study visits. Similarly, among 138 participants in the trace group who were in the normal range at baseline (<2.13 µmol/L), 2 were above the upper limit of normal at each of their last two consecutive study visits.

What test can be performed to compare the percentage of participants who developed abnormal triglyceride levels between the Vitamin A group and the trace group and report a p-value.
Year 0 Year 3 Retinol (mmol/L) N Mean +/- sd Mean +/- sd Vitamin A group 73 1.89 +/- 0.36 2.06 +/- 0.53 Trace Group 57 1.83 +/- 0.31 1.78 +/- 0.30
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Statistics and Probability-8192474.doc

8192474 Researchers found that among 133 participants in the Vitamin A group
(males and females combined) who were in the normal range at baseline
(&lt;2.13 µmol/L), 15 were above the upper limit...

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