The patients were an (average) age of 58, and about one in six were smokers.
Over the 3 months after they were (diagnosed) with pneumonia, less than half of the patients were given a chest X-ray to check for lung cancer.
Just over 1 percent of all the pneumonia patients ——36 people， were diagnosed with lung cancer (based) on an X-ray during those 3 months - which increased to 2.3 percent ——79 people， with X-rays given over the next 5 years. No patients (younger) than 40 got lung cancer during those 5 years of follow-up.
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