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Table 1 Demographic Characteristics of Subjects with COPD by Anemia Status (n = 495)

From: Association between anemia and quality of life in a population sample of individuals with chronic obstructive pulmonary disease

Characteristic Anemia (n= 37) No Anemia (n= 458) Total (n= 495) P-Value for Difference
Age (Means, SD) 65.05 (10.45) 64.07 (9.94) 64.15 (9.97) 0.57
HGB (Means, SD) 11.51 (1.05) 14.63 (1.11) 14.40 (1.38) <0.0001
Men (n, %) 19 (51.35) 277 (60.48) 296 (54.80) 0.28
Years of Education (Mean, SD) 12.46 (2.59) 12.84 (2.43) 12.81 (2.44) 0.36
Race (n, %)     <0.0001
Caucasian 25 (67.57) 426 (93.01) 451 (91.11)  
African American 12 (32.43) 32 (6.99) 44 (8.89)  
Myocardial Infarction (n, %) 3 (8.11) 53 (11.57) 56 (11.31) 0.52
Renal Disease (n, %) 2 (5.41) 8 (1.75) 10 (2.02) 0.13
Diabetes (n, %) 14 (37.84) 68 (14.85) 82 (16.57) 0.0003
Smoking Status (n, %)     0.09
Never Smoked 13 (35.14) 107 (23.36) 120 (24.24)  
Current Smoker 5 (13.51) 129 (28.17) 134 (27.07)  
Former Smoker 19 (51.35) 222 (48.47) 241 (48.69)  
Total Pack Years Smoked 18.65 (22.67) 28.33 (26.71) 27.60 (26.53) 0.03
FEV 1 , % Predicted 68.43 (8.23) 66.04 (12.69) 66.22 (12.42) 0.26