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drjkumar

tricky stats

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Q 7: If the at risk elderly population in the UK is 55 million then the number (to the nearest thousand) at risk of a fall is (they tell us there were 16 341 cases of fractures and the sample population represents 5% of the at risk population):

1. 27000

2. 10000

3. 40000

4. 50000

5. 60000

The data pertains to the following table.

http://bjp.rcpsych.org/cgi/content-nw/full/190/2/129/TBL2

could somebody help me with the answer

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DJKUMAR,

at first, I'd like to seek clarifications in the above question:

1. The total population of UK is assumed to be 55 million: not the at risk elderly population.

2. I am not sure wherefrom you have taken this question: it has both syntactic and logical errors.

3. Even assuming the 16,341 cases of fractures were observed in a sample of 5% of the total population, then the total population at risk would be,

(5/100)x5,500,000 = 275000

(Sadly this choice is close to none of the answers in the answer grid!)

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you will have to a another zero to your answer. the at risk population is 55000000.

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you will have to a another zero to your answer. the at risk population is 55000000.

Sorry, shrabanti, my mistake.

But still none of the choices seem to match, or do they? :-/

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Talking of tricky stats,does anybody remember in the last Paper 3(Feb) --what kind of study was the one in question(all about hip fracture,schizophrenia etc,etc.)?Will appreciate if somebody can help !

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