instruction: provide the number of patients whose diagnosis short title is schizophrenia nos-unspec and lab test abnormal status is abnormal
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id INNER JOIN lab ON demographic.hadm_id = lab.hadm_id WHERE diagnoses.short_title = "Schizophrenia NOS-unspec" AND lab.flag = "abnormal"