Table 2.

Distribution of cases of head and neck cancers and controls according to selected variables

Cancer of total oral cavity/pharynx (n = 3,915)Controls (n = 9,028)Cancer of the larynx (n = 1,224)Controls (n = 7,239)
n (%)n (%)n (%)n (%)
Age (y)
    <40157 (4.0)581 (6.4)26 (2.1)495 (6.8)
    40–44182 (4.7)597 (6.6)39 (3.2)538 (7.4)
    45–49397 (10.1)948 (10.5)121 (9.9)825 (11.4)
    50–54609 (15.6)1,457 (16.1)180 (14.7)1,245 (17.2)
    55–59754 (19.3)1,604 (17.8)262 (21.4)1,351 (18.7)
    60–64624 (15.9)1,320 (14.6)247 (20.2)1,010 (14.0)
    65–69583 (14.9)1,253 (13.9)211 (17.2)925 (12.8)
    70–74410 (10.5)927 (10.3)112 (9.1)692 (9.6)
    ≥75199 (5.0)339 (3.8)26 (2.2)156 (2.1)
    Missing0202
    P2 test, two-sided)<0.001<0.001
Sex
    Men2,970 (76.0)6,343 (70.3)1,105 (90.3)5,089 (70.4)
    Women940 (24.0)2,680 (29.7)118 (9.7)2,145 (29.6)
    Missing5515
    P2 test, two-sided)<0.001<0.001
Race/ethnicity
    Non-Hispanic white3,354 (86.0)8,116 (90.3)1,157 (95.0)6,753 (93.8)
    Black293 (7.5)378 (4.2)27 (2.2)134 (1.9)
    Hispanic/Latino122 (3.1)308 (3.4)24 (2.0)222 (3.1)
    Other*133 (3.4)190 (2.1)10 (0.8)94 (1.2)
    Missing133663
    P2 test, two-sided)<0.0010.06
Education
    No formal13 (0.3)31 (0.3)9 (0.7)31 (0.4)
    Less than junior high school1,173 (30.1)3,635 (40.5)675 (55.5)3,409 (47.4)
    Some high school835 (21.4)1,221 (13.6)136 (11.2)742 (10.3)
    High school graduate426 (10.9)823 (9.2)140 (11.5)722 (10.0)
    Vocational school, some college1,021 (26.2)1,987 (22.1)147 (12.1)1,060 (14.7)
    College graduate/postgraduate430 (11.1)1,289 (14.3)110 (9.0)1,233 (17.2)
    Missing220250168249
    P2 test, two-sided)<0.001<0.001
Cigarette smoking (pack-years)
    Never smokers570 (14.8)3,571 (40.1)58 (4.8)2,907 (40.8)
    1–10261 (6.8)1,477 (16.6)71 (5.9)1,234 (17.3)
    11–20340 (8.8)1,039 (11.7)130 (10.7)881 (12.4)
    21–30452 (11.7)873 (9.8)191 (15.8)707 (9.9)
    31–40540 (14.0)696 (7.8)230 (19.0)552 (7.8)
    41–50448 (11.6)452 (5.1)187 (15.5)336 (4.7)
    >501,240 (32.3)789 (8.9)343 (28.3)504 (7.1)
    Missing6413114118
    P2 test, two-sided)<0.001<0.001
    Mean ± SD3.67 ± 2.181.79 ± 2.003.98 ± 1.781.69 ± 1.92
    P (t test, two-sided)<0.001<0.001
Duration of cigar smoking (y)
    Mean ± SD1.76 ± 7.690.81 ± 4.960.96 ± 5.990.54 ± 3.92
    P (t test, two-sided)<0.0010.0019
Duration of pipe smoking (y)
    Mean ± SD1.27 ± 6.250.79 ± 4.620.66 ± 4.980.60 ± 4.03
    P (t test, two-sided)<0.0010.676
Alcohol intake (mL/d)
    Nondrinkers356 (9.4)1,894 (21.5)113 (9.6)1,618 (22.9)
    >0–194 (2.5)280 (3.2)6 (0.5)65 (0.9)
    >1–3138 (3.6)570 (6.5)21 (1.8)376 (5.3)
    >3–8206 (5.4)784 (8.9)35 (3.0)509 (7.2)
    >8–18398 (10.5)1,230 (14.0)73 (6.2)942 (13.3)
    >18–40565 (14.9)1,603 (18.2)146 (12.4)1,365 (19.3)
    >40–75640 (16.9)1,358 (15.4)248 (21.0)1,245 (17.6)
    >75–115453 (11.9)573 (6.5)219 (18.4)513 (7.3)
    >115–155381 (10.0)330 (3.7)201 (17.0)295 (4.3)
    >155566 (14.9)184 (2.1)119 (10.1)134 (1.9)
    Missing11822243177
    P2 test, two-sided)<0.001<0.001
    Mean ± SD85.80 ± 148.6533.17 ± 52.6580.01 ± 70.8735.14 ± 47.93
    P (t test, two-sided)<0.001<0.001
  • *Includes Brazilian, Asian and Pacific islanders, and other races.