Table 2.

Age-adjusted IRs and IRRs of M-SGC diagnosed in SEER-13 according to histologic subtype, 1992 to 2006

Total, WHOMucoepidermoidSquamous cellAdenoid cysticAcinic cellAdenocarcinoma-NOSCarcinoma ex-pleiomorphicTotal, non-WHO
nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)nIRIRR (95% CI)
Site
    Parotid4,2657.941.00 (reference)1,3262.431.00 (reference)7961.541.00 (reference)3230.591.00 (reference)7361.321.00 (reference)4860.921.00 (reference)1340.251.00 (reference)8241.581.00 (reference)
    Subman-dibular8451.580.20 (0.18-0.21)1590.290.12 (0.10-0.14)1260.240.16 (0.13-0.19)3270.601.03 (0.88-1.20)170.030.02 (0.01-0.04)940.180.19 (0.15-0.24)310.060.23 (0.15-0.35)1400.270.17 (0.14-0.20)
    Sublingual580.110.01 (0.01-0.02)240.050.02 (0.01-0.03)7230.040.07 (0.04-0.11)1203
    Other/unspecified2020.380.05 (0.04-0.05)450.080.03 (0.02-0.05)13360.070.11 (0.08-0.16)160.030.02 (0.01-0.04)590.110.12 (0.09-0.16)9540.100.07 (0.05-0.09)
Race
    White4,39410.301.00 (reference)1,2102.821.00 (reference)8472.011.00 (reference)5551.291.00 (reference)6371.471.00 (reference)5371.271.00 (reference)1400.331.00 (reference)8722.061.00 (reference)
    Black4158.130.79 (0.71-0.88)1462.821.00 (0.83-1.19)491.100.55 (0.40-0.73)621.220.94 (0.71-1.24)560.900.61 (0.45-0.81)491.000.79 (0.57-1.06)15731.530.74 (0.57-0.94)
    Asian/Pacific Islander4748.200.80 (0.72-0.88)1692.821.00 (0.84-1.18)380.740.37 (0.26-0.51)841.441.11 (0.87-1.41)651.070.73 (0.55-0.95)490.870.69 (0.50-0.93)15651.170.57 (0.43-0.73)
    Other/unspecified872988126411
Age (y)
    <501,5133.551.00 (reference)5741.341.00 (reference)510.121.00 (reference)2580.611.00 (reference)3870.901.00 (reference)1060.261.00 (reference)450.111.00 (reference)1560.371.00 (reference)
    ≥503,85726.897.57 (7.13-8.04)9806.815.09 (4.58-5.65)8916.2951.42 (38.77-69.63)4513.115.10 (4.37-5.97)3832.652.94 (2.54-3.39)5353.7314.61 (11.84-18.17)1290.898.31 (5.88-11.95)8656.0916.5 (13.86-19.66)
Age and gender
<50 y
        Females8483.991.00 (reference)3331.561.00 (reference)160.081.00 (reference)1470.691.00 (reference)2381.121.00 (reference)490.231.00 (reference)210.101.00 (reference)540.261.00 (reference)
        Males6653.130.78 (0.71-0.87)2411.120.72 (0.61-0.85)350.172.22 (1.20-4.30)1110.530.76 (0.59-0.98)1490.690.62 (0.50-0.76)570.281.18 (0.79-1.76)240.111.11 (0.59-2.10)1020.481.89 (1.35-2.68)
≥50 y
        Females1,59019.671.00 (reference)4465.581.00 (reference)2062.451.00 (reference)2593.251.00 (reference)2192.751.00 (reference)1962.401.00 (reference)620.761.00 (reference)2983.621.00 (reference)
        Males2,26737.461.90 (1.78-2.03)5348.741.57 (1.38-1.78)68511.994.90 (4.18-5.76)1922.980.92 (0.76-1.11)1642.540.92 (0.75-1.14)3395.482.28 (1.90-2.74)671.041.37 (0.95-1.98)5679.772.70 (2.34-3.12)

NOTE: IRs are age-adjusted to the 2000 U.S. standard population and expressed per 1,000,000 person-years. IRRs are based on unrounded rates.

Abbreviations: ∼, IRs and IRRs not calculated for other/unspecified race or <16 cases.