Assignment task:
The antigen test has a lower sensitivity (72.1%) compared to the PCR test (89%), meaning it is less likely to detect all true positive cases. The specificity is high (98.7%), indicating it is very good at correctly identifying those without the disease. The agreement with PCR (96.7%) suggests that in symptomatic patients, the antigen test results are largely consistent with PCR results. Asymptomatic Patients: The sensitivity drops further to 60.5%, indicating a significant number of false negatives (missed cases). The specificity remains very high at 99.5%, meaning it is excellent at ruling out those who do not have the disease. Implications: For Symptomatic Patients: The antigen test can be a useful tool for rapid screening due to its high specificity and reasonable sensitivity. However, the lower sensitivity compared to PCR means some cases might be missed, so negative results in symptomatic individuals might need confirmation with a PCR test. For Asymptomatic Patients: The lower sensitivity (60.5%) is a concern because it means a significant number of infected individuals might be missed. The high specificity (99.5%) is beneficial, but the risk of false negatives suggests that antigen tests should be used cautiously in asymptomatic screening, and negative results should? Want Professional Help?