Compared with no use of diuretics, current use was associated with the greatest multivariate relative risk (2.36, 2.21 to 2.52).
A total of 3000 charts for the study provide greater power for multivariate analyses, detecting interaction effects, robustness to violations of model assumptions.
The stated likelihood of reporting to duty was significantly greater for clinical (Multivariate OR: 2.5; CI 1.3 4.7) than technical and support staff, and perception of the importance of one's role in the agency's overall response was the single most influential factor associated with willingness to report (Multivariate OR: 9.5; CI 4.6 19.9).
But whereas current lesion mapping practice cannot be corrected by replication with greater numbers, the multivariate approach we propose here can, and ought ultimately to converge on the true locus (or loci) in each case, as far as the data allows.
In reporting of future studies, greater details about the multivariate modeling steps may aid in assessment of collinearity when significant bivariate outcomes become nonsignificant in multivariate analysis.
Patients having an endotracheal or trachea cannula were at greater risk, even after multivariate analysis (OR 8.07).
In multivariate models, greater alcohol consumption was associated with lower sensitivity for use of antidepressants (odds ratios, ORmodel1 = 0.39, P = 0.045 and ORmodel2 = 0.34, P = 0.043) (Table 4).
Future research will enable individual trends to be evaluated for respiratory morbidity and associated quality of life and provide a more complete prospective dataset that will allow greater statistical flexibility including multivariate analysis.
Table 2 presents crude and adjusted risk ratios (RR) for factors that were significantly associated with prolonged LOS in multivariate analyses (greater than the upper quartile of LOS, i.e. >20 days).
