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A test of heterogeneity (1 degree of freedom) was used to assess for differences between stratified parameter estimates.
Neuroblastoma, a malignant solid tumor of neural crest origin, accounts for 10% of all childhood cancers and exhibits a high clinical heterogeneity 1.
Tree reconstruction option, uses user defined tree search procedure, clocklike branch lengths on, exact parameter estimates, "JTT" substitution model, mixed model of rate heterogeneity (1 invariable + 8 gamma rates).
The following methods were used to explore sources of heterogeneity: (1) subgroup analysis (prospective and retrospective groups) and (2) sensitivity analysis performed by repeating analyses following the removal of each study, one at a time.
This is reflected in the interpretation: As I2 is the percentage of variability that is due to between-study heterogeneity, 1 - I2 is the percentage of variability that is due to sampling error.
The primary test was a test of heterogeneity (1 degree of freedom) for differences between prognosticator parameter estimates in models (b) and (c) compared to the baseline model (a).
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Although a number of studies of IAH/ACS risk factors have been published, interpretation of their reported estimates of risk is difficult due to significant between-study clinical heterogeneity [ 1, 2, 9, 10, 15- 23].
Bite weight seems to be more sensitive to the structural effects of local sward attributes, while behaviors at higher levels in the hierarchy (i.e. patches, feeding sites, home ranges) are more dependent on changes in feeding motivation driven by integrated responses to large scale biotic and abiotic heterogeneity [ 1, 3, 35].
Biofilm notion is based on single-celled unicellular individuals (bacteria, fungi, or yeasts) forming a sedentary community within a complex structure, displaying spatial and functional heterogeneity [1].
First, the trends of climate change are non-uniform through space and time; therefore, the impact on carbon cycling shows heterogeneity [1,2].
The main microvascular alterations consist in a decrease in the proportion of perfused vessels and the perfused vascular density (PVD) along with an increase in vessel heterogeneity [1],[2].
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com