Table 1

Characteristics of patients who underwent bronchoscopic biopsies and tumor resection

Normala (n = 20)Dysplasia (n = 15)NSCLC (n = 76)
 Age (yrs)
  Mean (±SD)56.8 (9.3)62 (6.7)64.1 (9.1)
  Median (range)57.1 (38–72)60 (49–72)64 (42–88)
 Gender
  Male11 (55%)b18 (72%)b36 (47.4%)b
  Female9 (45%)7 (28%)40 (52.6%)
 Ethnicity
  Caucasian19 (95%)22 (86.7%)65 (84.2%)
  Hispanic0 (0%)0 (0%)6 (7.9%)
  African-American1 (5%)0 (0%)6 (7.9%)
  Oriental0 (0%)1 (4%)0 (0%)
  Native American0 (0%)1 (4%)0 (0%)
  Unknown0 (0%)1 (4%)0 (0%)
 Smoker or former smoker20 (100%)25 (100%)59 (77.6%)
 Nonsmoker0 (0%)0 (0%)18 (22.4%)
 Pack-years
  Mean (±SD)46.7 (26.1)56.6 (21.4)48.4 (38.8)
  Median (range)39.0 (20–120)51 (30–111)45.0 (0–140)
  • a This includes 44 normal specimens and 9 specimens considered to be hyperplasia or squamous metaplasia.

  • b Percentiles calculated within each histological group.