Table 1 Descriptive characteristics of 1522 upper aero-digestive cancer cases and 1522 hospital based controls, Roswell Park Cancer Institute, 1982–1998
Controls(n = 1522)All cases(n = 1522)H&N cancers*(n = 455)Lung cancers†(n = 809)Oesophagealcancers‡ (n = 258)
Age, mean (SD)61.4 (11.3)62.0 (10.8)61.4 (11.5)62.3 (10.0)62.4 (11.8)
Smoking status
    Never, n (%)165 (10.8)165 (10.8)76 (16.7)37 (4.6)52 (20.2)
    Former, n (%)993 (65.2)778 (51.1)197 (43.3)437 (54.0)144 (55.8)
    Current, n (%)364 (23.9)579 (38.0)182 (40.0)335 (41.4)62 (24.0)
Smoking (intensity and duration)
    Packs smoked per day, mean (SD)1.3 (0.73)1.61 (0.77)1.62 (0.75)1.63 (0.75)1.51 (0.85)
    Years smoked, mean (SD)28.6 (14.2)37.1 (13.3)37.0 (13.2)38.3 (12.8)32.6 (14.7)
    Pack years, mean (SD)35.0 (31.1)54.4 (39.8)50.5 (40.2)60.5 (37.6)42.0 (2.2)
Asbestos
    Never exposed, n (%)1120 (74.1)1059 (70.8)317 (69.7)549 (67.9)193 (74.8)
    Exposed, n (%)392 (25.9)436 (29.2)130 (28.6)244 (30.2)62 (24.0)
Alcoholic drinks per week, mean (SD)6.8 (8.3)8.3 (9.7)9.2 (10.5)7.6 (8.9)8.9 (10.4)
Body mass index, mean (SD)26.3 (3.6)25.9 (3.9)25.7 (3.9)25.8 (3.7)26.9 (4.4)
Year of enrolment, mean (SD)1987 (4)1989 (4)1988 (4)1989 (4)1990 (4)
Educational level
    Not a high school graduate, n (%)366 (24.2)557 (36.8)169 (37.1)314 (38.8)74 (28.7)
    High school graduate, n (%)1148 (75.8)958 (63.2)284 (62.4)490 (60.6)184 (71.3)
Family income level
    <$25 000, n (%)931 (62.5)1025 (69.4)322 (70.8)553 (68.4)150 (58.1)
    ⩾$25 000, n (%)559 (37.5)451 (30.6)124 (27.3)229 (28.3)98 (38.0)
  • H&N, head and neck.

  • *Includes oral, oropharyngeal, nasal cavity, nasopharyngeal, hypopharyngeal and laryngeal cancers.

  • †Includes lung, bronchial and tracheal cancers.

  • ‡Includes oesophageal, gastro-oesophageal junction and gastric cardia cancers.