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19.5 structured abstract present simple, present perfect, past simple SETTING
– Hostels and day centres for homeless people in south London. OBJECTIVE – To develop an appropriate and effective method of screening for pulmonary tuberculosis (TB) among the homeless population. DESIGN – Observational study
evaluated for acceptability, yield of cases and completion of treatment. The screening (1)
includes / included a symptom questionnaire, a Heaf test and a chest x-ray. RESULTS – Ten clients (0.5%) (2)
have been / were identified as having active pulmonary TB. Seven of these (3)
are / were white men over the age of 50. The symptom questionnaire (4)
is / has been / was seldom helpful. Eight of the ten clients with active tuberculosis (5)
have completed / Share with your friends: 
