A diagnostic test for malignant hyperthermia has a specificity of 90%. This means that:

A Cox regression analysis yields a hazard ratio (HR) of 1.5 for patients undergoing general anesthesia compared to regional anesthesia. If the baseline hazard for regional anesthesia is 0.02, calculate the hazard for general anesthesia.

In a study predicting postoperative nausea and vomiting (PONV) based on anesthesia type and duration, how would you include anesthesia type (categorical variable) in the regression model?

Which method is most appropriate when replacing a small amount of missing preoperative blood pressure data with the average blood pressure of the group?

A Poisson regression model predicts the number of postoperative complications (Y ) using surgical duration (X ) with the following equation:log ⁡ ( λ ) = 0.2 X + 1.5 Calculate the expected number of complications (λ λ) for a surgery lasting 4 hours. Round to the nearest whole number.

Given the following data:Observed agreement (Po) = 0.72Expected agreement (Pe) = 0.50Calculate Cohen’s kappa (K). K= (Po−Pe) / (1 – Pe)

In a study examining BMI as a predictor of difficult intubation, an odds ratio (OR) of 2.5 means:

When analyzing postoperative infections among ICU patients, a Poisson regression coefficient (β 1 ​) of 0.3 for length of stay implies:

What is the main advantage of Full Information Maximum Likelihood (FIML) over simple imputation?

In a meta-analysis comparing supraglottic devices to endotracheal intubation for emergency airway management, an I² statistic of 85% indicates: