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Prevalence and risk factors for post-COVID-19 syndrome on medical students in Tabuk, Saudi Arabia-2023-2024

Begum et al., Journal of Family Medicine and Primary Care, doi:10.4103/jfmpc.jfmpc_2017_24, Sep 2025
https://c19early.org/begum2.html
PASC 59% improvement lower risk ← → higher risk Vitamin D for COVID-19  Begum et al.  SUFFICIENCY   Are vitamin D levels associated with COVID-19 outcomes? Retrospective 424 patients in Saudi Arabia Lower PASC with higher vitamin D levels (p=0.012) c19early.org Begum et al., J. Family Medicine and P.., Sep 2025 0 0.5 1 1.5 2+ RR
Vitamin D for COVID-19
8th treatment shown to reduce risk in October 2020, now with p < 0.00000000001 from 126 studies, recognized in 18 countries.
No treatment is 100% effective. Protocols combine treatments.
6,200+ studies for 180 treatments. c19early.org
Retrospective 424 medical students in Saudi Arabia showing vitamin D deficiency, diabetes, and bronchial asthma significantly associated with long COVID.
This is the 225th COVID-19 sufficiency study for vitamin D, which collectively show higher levels reduce risk with p<0.0000000001 (1 in 31,617,034,419,735,437,312 vigintillion).
risk of PASC, 59.2% lower, OR 0.41, p = 0.01, high D levels 176, low D levels 248, RR approximated with OR.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Begum et al., 29 Sep 2025, retrospective, Saudi Arabia, peer-reviewed, 5 authors.
Prevalence and risk factors for post-COVID-19 syndrome on medical students in Tabuk, Saudi Arabia-2023-2024
Shamina Begum, Hyder O Mirghani, Amirah Alhowiti, Tariq Alrasheed, Ahmed H A Sulaiman
Journal of Family Medicine and Primary Care, doi:10.4103/jfmpc.jfmpc_2017_24
Background: COVID-19 has infected 221 million individuals worldwide and new strains are discovered continuously. An important complication is the post-COVID-19 syndrome that affects various organs with substantial morbidities. Studies on post-COVID-19 symptoms and risk factors are scarce. We aimed to assess the same among medical students at the University of Tabuk, Saudi Arabia. Methodology: This cross-sectional study was conducted among 424 medical students at the University of Tabuk, Saudi Arabia, during the period from July 2023 to October 2024. A web-based questionnaire detailing the demographic factors, post-COVID-19 symptoms, comorbidities, vitamin D deficiency, and the cumulative grade average (GPA) was used. Results: Out of the 424 students, 38.2% were overweight and 9.4% were obese, 26.9% had bronchial asthma, and diabetes was found in 11.8%. Smoking was observed in 25%, and 58.5% were vitamin D deficient, while 22.6% were hospitalized with COVID-19. The majority of students received > two doses (74.1%), 24.5% received two doses, and 1.4% received one dose. The majority (80.7%) of students reported at least one post-COVID-19 symptom, and headache was the commonest symptom (63.7%), followed by cough in 50.5%. The absence from classrooms was 54.2%, 32.1%, and 13.7% (3 days, 3-8 days, and >10 days/ month, respectively), and 44.8% thought that long COVID-19 negatively affected their GPA. Conclusion: Post-COVID-19 syndrome was associated with diabetes, bronchial asthma, and vitamin D deficiency, odd ratios, 95% CI, 0.011-0.910, 0.005-0.312, 0.203-0.821, respectively, P values > 0.05. No significant association was found regarding, age, gender, and smoking, P values >0.05.
Ethical consideration Ethical clearance was obtained from the ethical committee University of Tabuk, Saudi Arabia (ref. UT-311-154-2023, dated, 02-10-2023). Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.
References
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DOI record: { "DOI": "10.4103/jfmpc.jfmpc_2017_24", "ISSN": [ "2249-4863", "2278-7135" ], "URL": "http://dx.doi.org/10.4103/jfmpc.jfmpc_2017_24", "abstract": "<jats:title>A<jats:sc>BSTRACT</jats:sc>\n </jats:title>\n <jats:sec>\n <jats:title>Background:</jats:title>\n <jats:p>COVID-19 has infected 221 million individuals worldwide and new strains are discovered continuously. An important complication is the post-COVID-19 syndrome that affects various organs with substantial morbidities. Studies on post-COVID-19 symptoms and risk factors are scarce. We aimed to assess the same among medical students at the University of Tabuk, Saudi Arabia.</jats:p>\n </jats:sec>\n <jats:sec>\n <jats:title>Methodology:</jats:title>\n <jats:p>This cross-sectional study was conducted among 424 medical students at the University of Tabuk, Saudi Arabia, during the period from July 2023 to October 2024. A web-based questionnaire detailing the demographic factors, post-COVID-19 symptoms, comorbidities, vitamin D deficiency, and the cumulative grade average (GPA) was used.</jats:p>\n </jats:sec>\n <jats:sec>\n <jats:title>Results:</jats:title>\n <jats:p>Out of the 424 students, 38.2% were overweight and 9.4% were obese, 26.9% had bronchial asthma, and diabetes was found in 11.8%. Smoking was observed in 25%, and 58.5% were vitamin D deficient, while 22.6% were hospitalized with COVID-19. The majority of students received &gt; two doses (74.1%), 24.5% received two doses, and 1.4% received one dose. The majority (80.7%) of students reported at least one post-COVID-19 symptom, and headache was the commonest symptom (63.7%), followed by cough in 50.5%. The absence from classrooms was 54.2%, 32.1%, and 13.7% (3 days, 3-8 days, and &gt;10 days/month, respectively), and 44.8% thought that long COVID-19 negatively affected their GPA.</jats:p>\n </jats:sec>\n <jats:sec>\n <jats:title>Conclusion:</jats:title>\n <jats:p>Post-COVID-19 syndrome was associated with diabetes, bronchial asthma, and vitamin D deficiency, odd ratios, 95% <jats:italic toggle=\"yes\">CI</jats:italic>, 0.011-0.910, 0.005-0.312, 0.203-0.821, respectively, <jats:italic toggle=\"yes\">P</jats:italic> values &gt; 0.05. 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Initial experience in a tertiary hospital", "author": "López-Vilella", "doi-asserted-by": "crossref", "first-page": "2743", "journal-title": "Transplant Proc", "key": "R8-20251009", "volume": "53", "year": "2021" }, { "DOI": "10.1016/j.genhosppsych.2023.01.002", "article-title": "Sleep disturbance during COVID-19: Correlates and predictive ability for mental health symptomatology in a Canadian online sample", "author": "Kowall", "doi-asserted-by": "crossref", "first-page": "48", "journal-title": "Gen Hosp Psychiatry", "key": "R9-20251009", "volume": "80", "year": "2023" }, { "DOI": "10.1016/j.eclinm.2021.100916", "article-title": "Sleep problems during COVID-19 pandemic and its'association to psychological distress: A systematic review and meta-analysis", "author": "Alimoradi", "doi-asserted-by": "crossref", "first-page": "100916", "journal-title": "EClinicalMedicine", "key": "R10-20251009", "volume": "36", "year": "2021" }, { "DOI": "10.1080/07448481.2021.1927053", "article-title": 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"R14-20251009", "volume": "13", "year": "2021" }, { "DOI": "10.1136/bmjgh-2021-005427", "article-title": "Characterising long COVID: A living systematic review", "author": "Michelen", "doi-asserted-by": "crossref", "first-page": "e005427", "journal-title": "BMJ Glob Health", "key": "R15-20251009", "volume": "6", "year": "2021" }, { "DOI": "10.1016/j.eclinm.2021.100899", "article-title": "Characteristics and predictors of acute and chronic post-COVID syndrome: A systematic review and meta-analysis", "author": "Iqbal", "doi-asserted-by": "crossref", "first-page": "100899", "journal-title": "EClinicalMedicine", "key": "R16-20251009", "volume": "36", "year": "2021" }, { "DOI": "10.1080/03007995.2022.2042991", "article-title": "Post-COVID-19 syndrome, low-grade inflammation and inflammatory markers: A cross-sectional study", "author": "Maamar", "doi-asserted-by": "crossref", "first-page": "901", "journal-title": "Curr Med Res Opin", "key": "R17-20251009", "volume": "38", "year": "2022" }, { 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"https://doi.org/10.1097/lww.0000000000001000", "volume": "14" }
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