Table 2.
Prevalence of Anemiaa and Hemoglobin Concentration by Race and Gender in the REGARDS Renal Ancillary Study, United States, 2003–2007
| Race | Gender |
P Valueb (Male vs. Female) | ||
| All (n = 19,836) | Male (n = 7,496) | Female (n = 12,340) | ||
| All (n = 19,836) | ||||
| Anemia prevalence, no. (%) | 2,809 (14) | 958 (13) | 1,851 (15) | <0.0001 |
| Hemoglobin concentration in g/dL, mean (SD) | 13.6 (1.5) | 14.5 (1.4) | 13.2 (1.2) | <0.0001 |
| White (n = 11,843) | ||||
| Anemia prevalence, no. (%) | 976 (8) | 418 (9) | 558 (8) | 0.31 |
| Hemoglobin concentration in g/dL, mean (SD) | 14.0 (1.4) | 14.8 (1.4) | 13.5 (1.2) | <0.0001 |
| Black (n = 7,992) | ||||
| Anemia prevalence, no. (%) | 1,833 (23) | 841 (21) | 1,293 (24) | 0.0012 |
| Hemoglobin concentration in g/dL, mean (SD) | 13.1 (1.4) | 14.0 (1.4) | 12.7 (1.2) | <0.0001 |
| P valuea (black vs. white) | ||||
| Anemia prevalence | <0.0001 | <0.0001 | <0.0001 | |
| Hemoglobin concentration in g/dL | <0.0001 | <0.0001 | <0.0001 | |
Abbreviations: REGARDS, REasons for Geographic And Racial Differences in Stroke; SD, standard deviation.
a
According to World Health Organization criteria used to define anemia.
b
χ-square test of difference in proportions for anemia vs. nonanemia and 2-tailed t test for hemoglobin concentration.