2. It is well known that the use of urinary catheters conveys a substantial risk

ID: 3251621 • Letter: 2

Question

2. It is well known that the use of urinary catheters conveys a substantial risk of urinary tract infection (UTI). A group of physicians believe that, in an intensive care setting, use of one particular type of urinary catheter is more likely to encourage infection than use of other types. They therefore review all medical records of ICU patients from a local hospital for the previous calendar year and record all uses of urinary catheters in the ICU. They find that 100 new UTI's occurred the 500 patients that used the suspect catheter as opposed to 50 UTI’s in 1,000 ICU patients using other catheter types.

a) Was this a cross-sectional, case-control, cohort, or retrospective cohort study?

b) From these data, estimate all of the following that you can:

i)(5) the relative risk for UTI associated with the suspect catheter type

ii)(5) the risk difference of new UTI's which are specifically due to the choice of the suspect catheter, above the rate conferred by use of another catheter type

iii)(5) for an individual catheterized with the suspect type, the proportion of that person's risk of UTI attributable to choice of catheter

Explanation / Answer

Solution:

a) Was this a cross-sectional, case-control, cohort, or retrospective cohort study?
ans: Retrospective cohort study

b) From these data, estimate all of the following that you can:
i.the relative risk for UTI associated with the suspect catheter type
ans:10

ii. the risk difference of new UTI's which are specifically due to the choice of the suspect catheter, above the rate conferred by use of another catheter type
ans:180 new UTI's per 1000 patient-days of catheterization

iii.for an individual catheterized with the suspect type, the proportion of that person's risk of UTI attributable to choice of catheter
ans: 90%

Navigate

2. It is well known that the use of urinary catheters conveys a substantial risk

2. It requires 27.5 mLofa NaOH solution to titrate 0.214 g of H,C,04 (MM=90.0).

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.

2. It is well known that the use of urinary catheters conveys a substantial risk

Question

Explanation / Answer

Related Questions

Navigate