For example: “a > 20 pack-year history of cigarette smoking is associated with an increased risk of pulmonary malignancy in women over age 60 as defined by ICD-9 diagnosis of squamous cell lung cancer taken from a large inner city hospital that cares for a predominantly indigent population…” This example could be “honed” even further. If you want to impress your colleague and/or mentor, be as specific as possible in this step!