In other words, it is possible that any differences in renal outcomes between the two groups could be due to unmeasured severity-of-illness differences.
Next to correction for severity of illness, differences with previous studies could be the result of differences in case mix, as we included ICU survivors only.
The fact that under saturation conditions, DFWM intensities fall off as the square of the concentration indicates the severity of these differences.
Because of this, in clinical MRI today, a tissue or material is typically referred to as being 'hyperintense' or 'hypointense' compared to another area, which may not provide a quantitative indication of the severity of the differences, and may have reduced sensitivity to global changes.
Described mortality for BSI is 14 - 26.5% [ 5, 23, 24]; we found 31%, this could be related to greater severity of disease, differences in management or both.
However, delays in care-seeking often occur and can be related to cost, non-recognition of the severity of illness, differences in the perception of the cause of disease, or geographic barriers [ 8- 11].
However, on adjusting for the severity of CHF, no difference in mortality was found in patients with mild or moderate CHF.
For severity of injury, no difference was found for patients with or without baseline fall history in the past 12 months (p = 0.78).
These inconsistent findings might be a result of subject variations, such as different age groups and severity of flatfoot, and differences in the definition and classification of flatfoot, and in methods of motion measurement [ 8, 29- 32].
Ghuman et al have also reported sex-related differences in children with sepsis, demonstrating an increase in mortality and initial severity of disease, although differences were based on pubertal status.
Concerning the severity of spasticity, significant differences between patients with mild, moderate or severe spasticity could be recorded for all subscales of the MSSS-88 except for 'emotional health'.
