Table 1.

Descriptive statistics by histopathologic subtypes in SEER's 12 registry database among female breastcarcinoma cases collected during 1992 to 1999

VariableAll cases combinedDuct NSTTubularLobular (ILC)
Frequency (N)189,634139,6733,47415,879
% of total cases100.0%73.7%1.8%8.4%
% SEER (average)100.0%67.5%-77.3% (73.1%)1.3%-3.4% (2.0%)7.8%-10.1% (9.0%)
% Expected100.0%65.0%-80.0%<2.0%<10.0%
Mean age (SE)61.9 (0.03)61.5 (0.04)63.0 (0.22)65.1 (0.11)
Median age62.062.064.066.0
Mean size (SE)2.17 (0.05)2.13 (0.06)1.1 (0.16)2.5 (0.19)
Rate (SE)132.1 (0.3)97.4 (0.26)2.4 (0.04)11 (0.09)
Variable
N
Rate
SE
RR
N
Rate
SE
RR
N
Rate
SE
RR
N
Rate
SE
RR
Patient demographics
    Age
        <5044,54342.40.201.034,12032.40.181.06050.60.021.02,4172.30.051.0
        50-5939,254284.31.446.729,220211.61.246.58065.80.219.93,08422.30.409.5
        60-6940,965380.61.889.030,018279.11.618.68748.10.2813.73,81535.30.5715.1
        70-7941,411468.62.3011.029,785337.01.9510.48479.60.3316.24,20747.60.7320.3
        80+23,461432.02.8210.216,530304.62.379.43426.40.3410.82,35643.40.9018.5
    Race
        White159,108137.00.351.0116,322100.30.301.03,1482.70.051.014,31512.20.101.0
        Black15,886120.70.970.911,93190.20.840.91461.10.100.48756.90.240.6
        Other13,29610,427154584
        Unknown1,34499326105
Estrogen Receptor (ER)
        ERP111,21577.50.231.081,62156.90.201.02,2991.60.031.011,3897.90.071.0
        ERN34,42924.20.130.327,52819.40.120.32190.20.010.11,2390.90.020.1
        Unknown43,99030,5249563,251
Variable
Medullary
Inflammatory (IBC)
Papillary
Mucinous
Frequency (N)2,1192,1081,2544,921
% of total cases1.1%1.1%0.7%2.6%
% SEER (average)0.7%-1.5% (1.0%)0.5%-1.9% (1.1%)0.4%-0.9% (0.6%)2.1%-3.0% (2.6%)
% Expected<5.0%1.0%-3.0%1.0%-2.0%2.0%
Mean age (SE)53 (0.30)57.7 (0.32)67.8 (0.39)68.3 (0.20)
Median age51.056.070.071.0
Mean size (SE)2.5 (0.58)5.9 (2.29)2.0 (0.67)2.0 (0.29)
Rate (SE)1.5 (0.03)1.5 (0.03)0.9 (0.02)3.3 (0.05)
Variable
N
Rate
SE
RR
N
Rate
SE
RR
N
Rate
SE
RR
N
Rate
SE
RR
Patient demographics
    Age
        <509820.90.031.07070.70.031.01630.20.011.06390.60.021.0
        50-594993.60.163.95123.70.165.61591.10.097.46064.40.187.2
        60-693313.10.173.43743.50.185.22772.60.1616.61,0489.60.3015.8
        70-792242.50.172.83283.70.205.63844.30.2228.01,56417.70.4529.1
        80+831.50.171.71873.40.255.22715.00.3032.21,06419.60.6032.1
    Race
        White1,5671.40.041.01,7101.50.041.09470.80.031.04,0773.30.051.0
        Black3852.70.142.02742.00.121.41711.40.111.83733.10.160.9
        Other160118130435
        Unknown76636
Estrogen Receptor (ER)
        ERP3720.30.011.07230.50.021.07380.50.021.03,5182.40.041.0
        ERN1,3020.90.033.56670.50.020.91140.10.010.22220.20.010.1
        Unknown4457184021,181
  • Abbreviations: % SEER, range for percentage of total cases for white subjects in those SEER registries comprising at least 90% of all breast carcinoma cases; % Expected, expected percentage range for each morphologic type as documented from other published studies; Mean and median age, mean and median age-at-diagnosis in years; Mean size, mean tumor size-at-diagnosis in centimeters; Rate, age-adjusted (2000 US standard) incidence rate expressed per 100,000 person-years; RR, rate ratio where a given characteristic is compared to a reference variable with an assigned value of 1.0.