^aLate Extubation = More Than 5 Hours of Mechanical Ventilation

question 1

Multiple Choice

$\begin{array}{c}\text { Table } 5\\\text { Odds Ratios for Late Extubation }{ }^{\mathbf{a}} \text { after Cardiac Surgery, by Patient }\\\text { Characteristics }(N=673) \\\begin{array}{|l|c|c|c|c|}\hline & \begin{array}{c}\text { Extubation } \leq 5 \\\text { Hours (\%) }\end{array} & \begin{array}{c}\text { Extubation }>5 \\\text { Hours (\%) }\end{array} & \text { OR } & 95 \% \text { CI } \\\hline \text { Female patient } & 19.2 & 29.8 & 1.66 & 1.14-2.60 \\\hline \text { White patient } & 89.6 & 91.3 & 1.09 & 0.80-1.21 \\\hline \text { Hypertensive } & 62.7 & 73.9 & 1.58 & 1.09-2.24 \\\hline \text { Prior CABG } & 9.4 & 16.0 & 2.03 & 1.22-3.65 \\\hline\end{array}\end{array}$ ^aLate extubation = More than 5 hours of mechanical ventilation
-Refer to Table 5. What is the probability that the OR for delayed extubation for women is less than 1.14?

• A) .025
• B) .05
• C) .50
• D) .95

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Definitions:

Negative Association

A negative association occurs when two variables move in opposite directions, meaning that as one variable increases, the other decreases.

Malaria

A disease caused by a parasite transmitted to humans through the bite of infected mosquitoes.

Dewpoint

The temperature at which air becomes saturated with moisture and dew can form.

Categorical Variable

A type of variable that can take on one of a limited, and usually fixed, number of possible values, representing distinct categories or groups.