no code implementations • 17 Jul 2023 • Abdullah Alqarni, Wei Wen, Ben C. P. Lam, Nicole Kochan, Henry Brodaty, Perminder S. Sachdev, Jiyang Jiang
Conclusion: The findings highlighted sex differences in the associations between WMH progression and cognition decline over time, suggesting sex-specific strategies in managing WMH accumulations in ageing.
no code implementations • 11 Sep 2022 • Annette Spooner, Gelareh Mohammadi, Perminder S. Sachdev, Henry Brodaty, Arcot Sowmya
This method uses temporal abstraction to convert the data into a more appropriate form for modelling, temporal pattern mining, to discover patterns in the complex, longitudinal data and machine learning models of survival analysis to select the discovered patterns.
no code implementations • 6 Jul 2022 • Annette Spooner, Gelareh Mohammadi, Perminder S. Sachdev, Henry Brodaty, Arcot Sowmya
When feature selection is applied to these datasets to identify the most important features, the biases inherent in some multivariate feature selectors due to correlated features make it difficult for these methods to distinguish between the important and irrelevant features and the results of the feature selection process can be unstable.
no code implementations • 5 Jul 2022 • Annette Spooner, Gelareh Mohammadi, Perminder S. Sachdev, Henry Brodaty, Arcot Sowmya
A fixed threshold, which is typically applied, offers no guarantee that the final set of selected features contains only relevant features.
no code implementations • 12 May 2022 • Abdullah Alqarni, Wei Wen, Ben C. P. Lam, John D. Crawford, Perminder S. Sachdev, Jiyang Jiang
Generalised linear models were applied to examine 1) the main effects of vascular (body mass index, hip to waist ratio, pulse wave velocity, hypercholesterolemia, diabetes, hypertension, smoking status) and hormonal (testosterone levels, contraceptive pill, hormone replacement therapy, menopause) factors on WMH, and 2) the moderation effects of hormonal factors on the relationship between vascular risk factors and WMH volumes.
no code implementations • 4 Apr 2022 • Jiyang Jiang, Dadong Wang, Yang song, Perminder S. Sachdev, Wei Wen
Cerebral small vessel disease (CSVD) is a major vascular contributor to cognitive impairment in ageing, including dementias.