Given a passage with a context and an answer, construct a question on the basis of the information present in the passage. Construct the question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) it answer uses text phrases from the passage. Avoid creating questions that (i) can't be answered correctly without actually understanding the passage and (ii) uses the same words or phrases given in the passage.
Q: Context: (1) Compare ideal cut-off points for DS and %FEV1 at 1 and 3hto predict hospitalization/relapse in subjects with moderate to severe asthma exacerbation (2) Develop a multivariate regression model using DS, %FEV1, demographic, and clinical variables to predict hospitalization/relapse.', 'Subjects with acute exacerbation of asthma (FEV1 <50% predicted following 30minof standardized treatment: 5mg nebulized albuterol; 0.5-1.5mg nebulized ipratropium; and 50mg oral prednisone) were eligible. All subjects had %FEV1 and DS obtained at baseline and hourly for 3h. Using hospitalization/relapse as the outcome of interest; we compared the area under the receiveroperator curves (AUC) between the 1 and 3hDS and %FEV1 measurements, and the AUC for the change in DS and %FEV1 between baseline and hour-3. We determined ideal cut-points for %FEV1 and DS to maximize sensitivity and specificity. Sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios (LR) were compared between %FEV1 and DS. We developed a multivariate regression model examining the association of specific demographic and clinical variables to hospitalization/relapse.', '142 patients were included for analysis. The AUC was greatest for the 3-hDS (0.721), followed by the 3-h%FEV1 (0.669). Optimum cut-off values were a DS of 2, and an FEV1 of 42%. These were associated with a +LR for the composite outcome of 3.06 and 2.48 respectively. Logistic regression showed baseline DS, 3-hDS, change in DS, and oxygen use at hour 3 were all associated with the composite outcome.
Answer: The 3-hscore for %FEV1 and DS performed better than scores at any other time point and better than either parameter over time. The 3-hDS had the greatest association with the composite outcome. Neither test was a strong enough predictor to be used solely for this purpose.
A:
Are repeated dyspnea score and percent FEV1 modest predictors of hospitalization/relapse in patients with acute asthma exacerbation?