Table 3.

Genotype frequencies

White patients
White controls
Black patients
Black controls
XPD751
N
%
N
%
P*
N
%
N
%
P†
AA   116   37.1   183   42.4   .167   20   52.6   87   59.6   .555  
AC   142   45.4   194   44.9   .960   18   47.4   52   35.6   .254  
CC
 		 55
 		 17.6
 		 55
 		 12.7
 		 .083
 		 0
 		 0
 		 7
 		 4.8
 		 .348
 
White patients
White controls
Black patients
Black controls
XPD751
N
%
N
%
P*
N
%
N
%
P†
AA   116   37.1   183   42.4   .167   20   52.6   87   59.6   .555  
AC   142   45.4   194   44.9   .960   18   47.4   52   35.6   .254  
CC
 		 55
 		 17.6
 		 55
 		 12.7
 		 .083
 		 0
 		 0
 		 7
 		 4.8
 		 .348
 

Cases versus controls: white, P = .125; black, P = .239.

*

P for comparisons between white patients and white controls

†

P for comparisons between black patients and black controls

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