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Table 1—

Characteristics of study subjects by case and control status

CharacteristicCase subjects (n = 901)Control subjects (n = 913)P value
Mean age (years ± SD) 66.1 ± 6.2 66.2 ± 6.3 0.835 
Married or living as married 588 (65.4%) 576 (63.2%) 0.333 
Ethnicity   0.106 
 Caucasian 838 (93.2%) 841 (92.3%)  
 African-American 19 (2.1%) 23 (2.6%)  
 Asian-American 21 (2.4%) 36 (4.0%)  
 Other 19 (2.1%) 10 (0.6%)  
Educational level   0.091 
 ≤12 years 373 (41.6%) 368 (40.6%)  
 >12 years to completed college 392 (43.4%) 416 (45.6%)  
 More than college 133 (15.0%) 127 (14.0%)  
Annual income   0.865 
 <$25,000 293 (37.4%) 293 (36.9%)  
 $25,000–50,000 361 (46.1%) 376 (47.3%)  
 >$50,000 130 (16.6%) 126 (15.6%)  
CharacteristicCase subjects (n = 901)Control subjects (n = 913)P value
Mean age (years ± SD) 66.1 ± 6.2 66.2 ± 6.3 0.835 
Married or living as married 588 (65.4%) 576 (63.2%) 0.333 
Ethnicity   0.106 
 Caucasian 838 (93.2%) 841 (92.3%)  
 African-American 19 (2.1%) 23 (2.6%)  
 Asian-American 21 (2.4%) 36 (4.0%)  
 Other 19 (2.1%) 10 (0.6%)  
Educational level   0.091 
 ≤12 years 373 (41.6%) 368 (40.6%)  
 >12 years to completed college 392 (43.4%) 416 (45.6%)  
 More than college 133 (15.0%) 127 (14.0%)  
Annual income   0.865 
 <$25,000 293 (37.4%) 293 (36.9%)  
 $25,000–50,000 361 (46.1%) 376 (47.3%)  
 >$50,000 130 (16.6%) 126 (15.6%)  

Data are n (%).

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