Here, we compare SNW data generated using two different methods to account for variability in test size, namely (i) the narrow (50 mu m range) sieve fraction method and (ii) the individually measured test size method.
Using specimens from the 200-250 mu m sieve fraction range collected in multinet samples from the North Atlantic, Nepicastat order we find that sieving does not constrain size sufficiently well to isolate changes in weight driven by variations in test wall thickness and density from those driven by size. We estimate that the SNW data produced as part of this study are associated with an uncertainty, or error bar, of about +/- 11%. Errors associated with the narrow sieve fraction buy 5-Fluoracil method may be reduced by decreasing the size of the sieve window, by using larger tests and by increasing the number tests employed. In situations where
numerous large tests are unavailable, however, substantial errors associated with this sieve method remain unavoidable. In such circumstances the individually measured test size method provides a better means for estimating SNW because, as our results show, this method isolates changes in weight driven by variations in test wall thickness and density from those driven by size.”
“Background: Little is known about global patterns of critical care unit (CCU) care and the relationship with outcomes in patients with acute decompensated heart failure (ADHF). Whether a ward or a CCU admission is associated with better outcomes is unclear. Methods: Patients in the Acute Study of Clinical Effectiveness of Nesiritide in Decompensated Heart Failure (ASCEND-HF) trial were initially
hospitalized in a ward or CCU (coronary or intensive care unit). Sites were geographically classified: Asia-Pacific (AP), Central Europe CA3 clinical trial (CE), Latin America (LA), North America (NA), and Western-Europe (WE). The primary outcome of 30-day all-cause mortality or all-cause hospital readmission was adjusted using a two-stage multivariable logistic regression model with a generalized estimated equation that took sites within each country as a nested random factor. Results: Overall, 1944 (38.2%) patients were admitted to a CCU and 3150 (61.8%) to award, and this varied by region: 50.6% AP, 63.3% CE, 60.7% WE, 22.1% LA, and 28.6% NA. The 30-day death or readmission rate was 15.2% in ward patients and 17.0% in CCU patients (risk-adjusted Odds Ratio [OR] 1.44: 95% CI, 1.14-1.82). Compared with CCU patients in NA (24.1% 30-day event rate), the primary outcomes were: AP (10.4%, Odds Ratio [OR] 0.63; 95% confidence Interval [CI], 0.35 to 1.15), CE (10.4%, OR 0.56: 95% CI, 0.31 to 1.02), LA (22.4%, OR 0.60: 95% CI, 0.11 to 3.32), and WE (11.2%, OR 0.63, 95% CI, 0.25 to 1.56). No regional differences in 30-day mortality were observed; however, 30-day readmission rates were highest in NA sites.