Table 2.

Tobacco use among Rb survivors

CharacteristicHereditary, n (%)Nonhereditary, n (%)P
Smoking status
    Never smoker285 (65.7)212 (54.8)
    Current smoker73 (16.8)94 (24.3)
    Former smoker76 (17.5)81 (20.9)0.004
Age started smoking (y)—current smokers
    8-148 (11.0)13 (14.0)
    15-1844 (60.3)56 (60.2)
    19-2216 (21.9)17 (18.3)
    23-305 (6.9)7 (7.5)0.898
No. pack-years (y)—current smokers
    0.5-<513 (18.1)15 (17.0)
    5-<915 (20.8)16 (18.2)
    9-<1825 (34.7)27 (30.7)
    18+19 (26.4)30 (34.1)0.769
Average packs per day (ppd)—current smokers
    <0.534 (47.9)35 (40.2)
    0.5-129 (40.8)42 (48.3)
    >1-28 (11.3)10 (11.5)0.604
Age started smoking (y)—former smokers
    8-149 (12.0)11 (13.8)
    15-1844 (58.7)48 (60.0)
    19-2219 (25.3)16 (20.0)
    23-303 (4.0)5 (6.2)0.808
No. pack-years (y)—former smokers*
    0.5-<521 (28.8)26 (34.2)
    5-<923 (31.5)19 (25.0)
    9-<1818 (24.7)10 (13.2)
    18+9 (12.3)20 (26.3)0.105
Average packs per day (ppd)—former smokers
    <0.541 (55.4)45 (58.4)
    0.5-126 (35.1)24 (31.1)
    >1-27 (9.5)8 (10.4)0.872
Other tobacco use
    No320 (73.6)285 (73.6)
    Yes115 (26.4)102 (26.4)0.979
  • * Missing number of pack-years for 2.7% of hereditary and 1.3% of nonhereditary former smokers.

  • Regular or occasional use of other tobacco products (cigars, pipes, chewing tobacco, or snuff).