What proportion of patients who had signs of thrombocytopenia had SLE diagnosed?
thrombocytopenia' refers to symptoms; 'SLE' refers to diagnosis; calculation =   DIVIDE(SUM(DIAGNOSIS LIKE '%ITP%'), SUM(DIAGNOSIS LIKE '%SLE%')) MULTIPLY 100
SELECT CAST(SUM(CASE WHEN Diagnosis = 'SLE' THEN 1 ELSE 0 END) AS REAL) * 100 / COUNT(ID) FROM Examination WHERE Symptoms = 'thrombocytopenia'