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Author

S. Qazi

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Open access Oct 2026

Parkinson’s disease mortality in the United States, 1999–2025: a national multiple-cause-of-death analysis with projections to 2030

Parkinson’s disease (PD) is the second most common neurodegenerative disorder in the United States and a growing driver of late-life disability and death. We characterized U.S. PD-related mortality from 1999 to 2025 and projected it to 2030. In this serial cross-sectional analysis of CDC WONDER Multiple Caus...

Eshal Atif, Vishan Das, Mazhar Ali et al. · 0 citations
Open access Sep 2026

Tumor-cell PD-L1 expression, mismatch repair status, and survival outcomes in colorectal carcinoma: a retrospective Pakistani cohort study

Background Tumor-cell programmed death-ligand 1 (PD-L1) expression has been investigated as a biomarker for colorectal carcinoma (CRC), but the reported positivity rates vary by antibody clone, scoring method, and threshold. Tumor-cell PD-L1 is not a validated companion diagnostic tool for CRC. We assessed whether PD-L...

Kanza Atif, Aiman Ajmeer, Abdal Ahmad et al. · 0 citations
Open access Oct 2026

Temporal trends and disparities in mesenteric ischemia–associated cardiovascular mortality among U.S. adults aged ≥45 years, 1999–2023

Mesenteric ischemia (MI) is a highly fatal vascular condition associated with cardiovascular disease, but long-term national mortality patterns remain poorly described. To evaluate national mortality trends, demographic heterogeneity, and geographic variations in MI and cardiovascular mortality among U.S. ad...

Muhammad Atif Mazhar, Taha Alam, Yusra Fazli et al. · 0 citations
Review Open access Sep 2026

Educational environment perceptions across curriculum formats: structural associations among DREEM domains and academic self-perceptions

Introduction Team-Based Learning (TBL) is increasingly used in health professions education; however, the Dundee Ready Education Environment Measure (DREEM) has rarely been formally evaluated in TBL-based medical curricula. This study examined the structural validity of the DREEM, assessed whether associations with aca...

Burhanettin Ozdemir, A. Shaikh, Muhammad Atif Mazhar et al. · 0 citations
Open access Sep 2026

Differential associations of the timing and amount of social media use with sleep quality and academic performance among undergraduate medical and dental students in Pakistan: a cross-sectional study

Poor sleep and reduced academic performance among medical and dental students have been linked to social media use; however, whether the amount, purpose, and timing of use are independently associated with these outcomes remains unclear. In this cross-sectional study, 364 students enrolled in MBBS or BDS pro...

Kanza Atif, Abdal Ahmad, Ayat Ullah Khan et al. · 0 citations
Review Open access Jul 2026

Agreement, calibration, and failure of three large language models as high-stakes multimodal ospe graders: a comparative psychometric analysis

Strong rank-order correlation alone does not support LLM grading for categorical decisions in high-stakes assessment contexts, and item-level gap analysis highlighted three recurring divergence patterns: non-standard histological staining, three-dimensional spatial reasoning from two-dimensional images, and semantic in...

S. Akhund, S. Qazi, Muhammad Atif Mazhar et al. · 1 citation

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