Table 2.

Distribution of CBMN endpoints among MDACC and MGH populations

MDACCMGH
Case (N = 527)Controls (N = 468)Case (N = 239)Controls (N = 272)
BN-MNMean ± SDMean ± SDMean ± SDMean ± SD
Overall3.54 ± 0.991.76 ± 0.833.60 ± 1.011.81 ± 0.87
Age
 ≤623.55 ± 0.971.78 ± 0.853.72 ± 1.051.78 ± 0.91
 >623.54 ± 1.011.73 ± 0.803.52 ± 0.971.82 ± 0.84
Gender
 Male3.52 ± 1.001.71 ± 0.823.64 ± 1.031.73 ± 0.87
 Female3.57 ± 0.981.81 ± 0.833.56 ± 0.991.86 ± 0.87
Smoking
 Never3.56 ± 1.021.69 ± 0.813.62 ± 1.211.70 ± 0.81
 Former3.54 ± 0.981.73 ± 0.793.61 ± 0.931.86 ± 0.86
 Current3.54 ± 0.991.82 ± 0.873.57 ± 1.021.80 ± 0.93
BN-NPB
Overall4.25 ± 0.760.99 ± 0.623.89 ± 1.021.02 ± 0.66
Age
 ≤624.28 ± 0.730.98 ± 0.573.77 ± 1.151.01 ± 0.63
 >624.23 ± 0.781.00 ± 0.663.91 ± 0.911.04 ± 0.64
Gender
 Males4.28 ± 0.740.99 ± 0.623.97 ± 0.881.02 ± 0.64
 Females4.22 ± 0.770.99 ± 0.623.83 ± 1.111.03 ± 0.63
Smoking
 Never4.18 ± 0.750.94 ± 0.593.86 ± 0.951.03 ± 0.8
 Former4.25 ± 0.750.97 ± 0.603.94 ± 0.961.02 ± 0.62
 Current4.29 ± 0.771.04 ± 0.663.83 ± 1.121.00 ± 0.61

NOTE: Resulting P values from comparing endpoints between cases and controls (BN-MN or BN-NPB) overall or stratified by age, gender, or smoking status. Mean differences between MDACC cases and controls were significant at the 0.0001 level within all strata. Mean differences between MGH cases and control were significant at the 0.0001 level within all strata. Mean BN-MN differences between MDACC cases and MGH cases were not significant (P > 0.05) within all strata. Mean BN-NPB differences between MDACC cases and MGH cases were significant (P < 0.05) within all strata.