If the clinical diagnosis is considered a screening test for Alzheimer’s disease, then what is the sensitivity of this test? 

Mental Health
The ε4 allele of the gene encoding apolipoprotein E (APOE) is strongly associated with Alzheimer’s disease, but its value in making the diagnosis remains uncertain. A study was conducted among 2188 patients who were evaluated at autopsy for Alzheimer’s disease by previously established
pathological criteria [16]. Patients were also evaluated clinically for the presence of Alzheimer’s disease. The data in Table 3.15 were presented.
Suppose the pathological diagnosis is considered the gold standard for Alzheimer’s disease.