Calculate the value for the marked cell (?). Risk of coronary death, by number of cigarettes smoked...

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Calculate the value for the marked cell(?).
Risk of coronary death, by number of cigarettes smoked per day,for 1,416 employed middle-aged men: ChicagoWestern Electric study, 22-year follow-up.
No. Cigarettes smoked per day
No. at risk
Person-years
No. of coronary deaths over 22 years
Risk per 1000 persons per year (CI)
Risk per 1000 person-years (ID)
0
645
12,757
84
?
?
1-14
197
3,794
33
?
?
15-24
387
7,074
73
?
?
25-60
187
3,244
42
?
?
Total
1416
26,869
232
?
?

Answer & Explanation Solved by verified expert

3.6 Ratings (466 Votes)

SolutionGiven the above table we have to find out theRisk per 1000 persons per year CI or CumulativeIncidence and Risk per 1000personyears ID or Incidence DensityCumulativeIncidence CI CI is defined as the ratio of the See Answer

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Risk of coronary death, by number of cigarettes smoked per day,for 1,416 employed middle-aged men: ChicagoWestern Electric study, 22-year follow-up.
No. Cigarettes smoked per day	No. at risk	Person-years	No. of coronary deaths over 22 years	Risk per 1000 persons per year (CI)	Risk per 1000 person-years (ID)
0	645	12,757	84	?	?
1-14	197	3,794	33	?	?
15-24	387	7,074	73	?	?
25-60	187	3,244	42	?	?
Total	1416	26,869	232	?	?