Rates Per 1000 Calculation

[gadgetgeek]

Could anyone confirm the equation to be used to calculate incidents per 1000 events if the 1000 mark was not reached?
For example; a target is set of less than 3 incidents per 1000 events. There have been 2 incidents BUT during only 297 events.
What equation is needed to ascertain the rate per 1000?

[dannyk13]

Divide 2 by 297 and multiply by 1000 + 6.734

[Peter Pedant]

the fraction is 2/297
and the rule from form III is:
divide it out and multiply by a 1000

since I dont have a calculator - it is between 6 and 10 ( per thousand)

and as your teacher said back then ( 60 y for me)
do a test on something you know
2/3 - as a fraction of 100 or per cent
divide it out - 0.667 and then multipy by 100
is 67% - and we all know 2/3 as a percent is 67% near as - or 67 in 100

[dannyk13]

pp ? ^^

[Peter Pedant]

Oh Danny has given you the answer 6.73
but not in a form that I recognised

[Peter Pedant]

Hi Danbo
your answer looks to me like 1006.74
I kinda do sums in me ed see?

[dannyk13]

+ should be =

[Peter Pedant]

oh come on
come on
you make a mistake and then point to me and say
"oo wots he talking about den? foo he mad he is. I always knew it. You read what he says and fink gor ***. in fact often BEFORE reading !"

[Ellipsis]

The equation is:

(incidents / events ) x 1000

In this case, then:

(2 / 297) x 1000 = 6.734

Which is more than double the target of 3 you are looking for, so it's bad.

[dannyk13]

PP, not my fault if your posts are unintelligible :-)

[pixie374]

Made sense to me :-)

[dannyk13]

Pixie, you cleverer than me then.

[Peter Pedant]

oh come on
come on .....

[pixie374]

I very much doubt it, danny... but you do need to read it x

[woofgang]

the maffs is right but ONLY if the period over which the measurement is planned to be done has ended or the group of 1000 have all been tested and so on.