Confidence Interval problem Watch

Moonkin
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#1
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I've worked out that the number needed to treat for a certain drug is 189.
However the confidence interval that my CHI program has calculated are -60 to 150.

Have I gone wrong somewhere or is this believeable (how can I interpret this?)
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ghostwalker
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#2
Report 5 years ago
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(Original post by Moonkin)
I've worked out that the number needed to treat for a certain drug is 189.
However the confidence interval that my CHI program has calculated are -60 to 150.

Have I gone wrong somewhere or is this believeable (how can I interpret this?)
Since 189\not\in (-60,150) it looks as if something is wrong.
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Moonkin
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(Original post by ghostwalker)
Since 189\not\in (-60,150) it looks as if something is wrong.
This is really frustrating as I'm certain I've put the values in correctly but this doesn't make sense urghh
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Moonkin
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Okay so I worked out that my values are correct but still my interpretation is not getting anywhere.

I download a biostatistics program and it confirmed my CI was correct however...

It listed the 95% CI as 60(harm) to INFINITY to 137 (benefit). Which I dont even understand as normally this program gives values as x(benefit) to x(benefit)
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