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However, the factors influencing SCD progression remain unclear. It is necessary to develop a model for predicting cognitive progression in SCD.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>96 participants with SCD and 36 healthy controls (HCs) were enrolled from the Chinese Imaging, Biomarkers, and Lifestyle study between January 1 and June 30, 2022. Of these, 70 completed approximately 12 months of follow\u2010up visits. Clinical, cognitive assessment, and neuroimaging data were collected. Cox proportional\u2010hazard regression models were used to investigate the risk factors and construct a nomogram.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Compared to HCs, participants with SCD had higher Pittsburgh Sleep Quality Index (PSQI) scores, indicating they had poorer sleep quality, and had higher cerebral blood flow (CBF) in bilateral hippocampus, thalamus, and left precuneus (all\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.05). Poorer sleep quality and left precuneus CBF were independently associated with SCD progression (all\n                      <jats:italic>p<\/jats:italic>\n                      &lt; 0.05). The nomogram constructed with these factors achieved good discriminative ability, with an AUC of 0.785 (95% CI: 0.609\u20130.960) and a coherence index of 0.840 (95% CI: 0.733\u20130.948). The calibration curves showed significant agreement between the model and actual observations, and the decision curve analysis of the model showed clinical benefit.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>A predictive model for SCD progression constructed based on risk factors including PSQI scores and left precuneus CBF showed good accuracy and discrimination ability, and it may provide valuable insights for early stage screening of AD.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/brb3.70719","type":"journal-article","created":{"date-parts":[[2025,8,12]],"date-time":"2025-08-12T07:35:26Z","timestamp":1754984126000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Development of a Predictive Model for the Progression of Subjective Cognitive Decline: A 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