ABSTRACT
Background: Coronaviruses are a broad family of pathogens that can cause mild to severe respiratory illnesses. Due to a strong inflammatory response and a weak immunological response, viral pneumonia inflammation, like Coronavirus Disease 2019 (COVID-19), displays an unbalanced immune response. Therefore, circulating biomarkers of inflammation and the immune system can serve as reliable predictors of a patient's prognosis for COVID-19. Hematological ratios are reliable markers of inflammation that are frequently utilized in pneumonia, primarily in viral infections with low cost in developing countries. Purpose: To examine the neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), and platelet-to-lymphocyte ratio (PLR) in predicting the severity of COVID-19 patients. Methods: An institutional-based retrospective study was done on 105 hospitalized COVID-19 patients at the University of Gondar comprehensive specialized referral hospital, Northwest Ethiopia. The laboratory evaluations that were gathered, evaluated, and reported on included the total leucocyte count (TLC), absolute neutrophil count (ANC), absolute lymphocyte count (ALC), absolute monocyte count (AMC), NLR, LMR, and PLR. The Kruskal-Wallis test and Wilcoxon matched-pairs signed test were used to see whether there were any differences between the continuous variables. Receiver operating curve (ROC) analysis was used to determine the appropriate cut-off values for NLR, PLR, and LMR. P-value <0.05 was considered a statistically significant association. Results: ANC, NLR, and PLR were highest in the critical group (p = 0.001), while this group had the least ALC and LMR (p = 0.001). We calculated the optimal cut-off values of the hematological ratios; NLR (8.4), LMR (1.4), and PLR (18.0). NLR had the highest specificity and sensitivity, at 83.8% and 80.4%, respectively. Conclusion: Our research showed that NLR and PLR were good indicators of severity in COVID-19. However, our findings indicate that MLR is not a reliable predictor.
ABSTRACT
BACKGROUND: In Ethiopia, an array of measures have been adopted to control the rapid spread of the Coronavirus Disease 2019 (COVID-19) pandemic. Such control measures could significantly influence the knowledge, attitudes, and practices (KAP) towards COVID-19 in the general population. However, still, there is scarce information regarding the KAP of students towards the COVID-19 pandemic. Therefore, this study aimed to assess KAP and associated factors towards COVID-19 among secondary school students in Gondar town, Ethiopia. METHODS: A cross-sectional study was conducted from February to April 2021 on a total of 395 participants. Proportional sample allocation was used in 4 randomly selected schools. Then, students from each of the schools were recruited by using a systematic random sampling technique. Socio-demographic data and questions regarding the KAP were collected via a self-administered questionnaire. Statistical analysis was performed by using SPSS 20. Logistic regression analyses were used to identify the associated factors and p-value <0.05 was considered statistically significant. RESULTS: The mean age of study participants was 17.7±1.5 years and slightly more than 2/3 (67.3%) ranges from 17-19 years old. In this study, 86.3% (95% CI: 83-90) of study participants had good knowledge about COVID-19. Students having urban residence (AOR, with 95% CI: 5.6 (1.76-17.6), fathers with a diploma and above educational status (AOR, with 95% CI: 3 (1.2-7.5), and uses television or radio as a source of information (AOR, with 95% CI: 3.7 (1.5-9.3) tended to have good knowledge about COVID-19. About 381 (86.3%) had good attitude towards COVID-19 infections, while 238 (60.3%) of the participants had a good practice to prevent COVID-19 infections. CONCLUSIONS: The majority of the secondary school students in Gondar town have good knowledge, attitude, and practices towards COVID-19. However, targeted interventions are still necessary, especially for students having poor knowledge and poor practice towards COVID-19. This study also found that urban residence, a father with a diploma and above educational status, and using television or radio as a source of information about COVID-19 were significantly associated with the knowledge level of the study participants.