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A comment on U.S. Navy test shows 60 percent of carrier crew have coronavirus antibodies.

Re:U.S. Navy test shows 60 percent of carrier crew have coro... by thephyber on Monday June 08, 2020 @05:40PM (#23461104)
This was a sample not a full test of all sailors on the ship and it was based on serology tests as developed by April.

> about 400 volunteers participated in the serology tests

> The Roosevelt has about 4,800 personnel on the ship.

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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by throwaway894345 on Monday June 08, 2020 @05:44PM (#23461147)
This sample is statistically significant. Not sure what the problem is?
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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by beervirus on Monday June 08, 2020 @05:49PM (#23461199)
It’s not a random sample.
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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by JPKab on Monday June 08, 2020 @05:57PM (#23461263)
In the sense that they requested 1,000 volunteers, and 400 signed up? Do you mean it's a selection bias due to only a certain kind of person who signs up for these things getting tested?
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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by bronzeage on Monday June 08, 2020 @06:07PM (#23461336)
Yes, correlation between suspicion of infection to volunteering to testing positive. If they wanted to know how many felt symptoms they would survey them. Wouldn't jump to conclusions.
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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by ipsum2 on Monday June 08, 2020 @06:06PM (#23461334)
People would sign up if they suspected they had coronavirus based off of their symptoms.
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Re:U.S. Navy test shows 60 percent of carrier crew have coro... by thephyber on Tuesday June 09, 2020 @09:47PM (#23472998)
This comment thread is about antibodies.

There was a different line of testing for who actually had the active virus/disease which included far more sailors from the ship:

> As of Monday, the Navy had tested 94 percent of the crew for the virus, with 678 positive and 3,904 negative results.

[1] https://www.politico.com/news/2020/04/21/navy-extends-isolat...

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