Frequency of blacks among patients with immune thrombocytopenic purpura
. | . | . | Patients . | . | . | |
|---|---|---|---|---|---|---|
| Study (site) . | Publication y . | Y of patient accrual . | Total, no. . | Black, no. (%, 95% CI) . | % black* . | |
| Block et al2 (Chicago)† | 1966 | 1948-1964 | 67 | 4 (6.0, 1.7-14.6) | 24.3 | |
| Wilde et al3 (Pittsburgh)‡ | 1967 | 1949-1966 | 43 | 2 (4.7, 0.6-15.8) | 16.7 | |
| Akwari et al4 (Durham)§ | 1987 | 1975-1985 | 100 | 20 (20.0, 12.7-29.2) | 47.1 | |
| Guthrie et al5 (Augusta)‖ | 1988 | 1954-1983 | 40 | 12 (30.0, 16.6-46.5) | 37.4 | |
| George et al6 (United States)¶ | 2003 | 1997-2000 | 66 | 5 (7.6, 2.5-16.8) | 18.1 | |
| Aledort et al7 (United States)** | 2004 | 2000-2001 | 158 | 9 (5.7, 2.6-10.5) | 24.8 | |
| Unpublished review (Oklahoma)†† | 2004 | 2004 | 87 | 4 (4.6, 1.3-11.4) | 8.0 | |
. | . | . | Patients . | . | . | |
|---|---|---|---|---|---|---|
| Study (site) . | Publication y . | Y of patient accrual . | Total, no. . | Black, no. (%, 95% CI) . | % black* . | |
| Block et al2 (Chicago)† | 1966 | 1948-1964 | 67 | 4 (6.0, 1.7-14.6) | 24.3 | |
| Wilde et al3 (Pittsburgh)‡ | 1967 | 1949-1966 | 43 | 2 (4.7, 0.6-15.8) | 16.7 | |
| Akwari et al4 (Durham)§ | 1987 | 1975-1985 | 100 | 20 (20.0, 12.7-29.2) | 47.1 | |
| Guthrie et al5 (Augusta)‖ | 1988 | 1954-1983 | 40 | 12 (30.0, 16.6-46.5) | 37.4 | |
| George et al6 (United States)¶ | 2003 | 1997-2000 | 66 | 5 (7.6, 2.5-16.8) | 18.1 | |
| Aledort et al7 (United States)** | 2004 | 2000-2001 | 158 | 9 (5.7, 2.6-10.5) | 24.8 | |
| Unpublished review (Oklahoma)†† | 2004 | 2004 | 87 | 4 (4.6, 1.3-11.4) | 8.0 | |
Data summary for all published articles from the United States describing 10 or more patients that identified patients by race.
Census data are percentages for one race reported as black non-Hispanic
Census data for Chicago for 1960 were obtained from the Reference Department of the Illinois State Library, Springfield, IL
Census data for Pittsburgh for 1960 were obtained from the Bureau of State Library-Law/Government Publication, State Library of Pennsylvania, Harrisburg, PA
Census data for Durham for 1980 were obtained from the Missouri State Census Data Center (http://oseda.missouri.edu/mscdc/census/us/trend/places/S37NC/P370|750), August 17, 2004
Census data for Richmond County, which includes Augusta, for 1980 were obtained from the East Central Georgia Regional Library, Augusta, GA
This study reported 70 adult patients, ages ≥ 18 years, from 20 United States' sites that enrolled 1 to 10 patients. The 4 patients from our site are omitted to avoid analysis of duplicate patients; they are included in our Oklahoma data. Census data for adults ages ≥ 18 years were obtained from the United States Census Bureau; Census 2000, PL 94-171 Summary File, using American Fact Finder; http://factfinder.census.gov (July 27, 2004). Data for the cities where the studies were performed were averaged in proportion to the number of patients enrolled from each city. Data on race were not included in the published article6 but were obtained from the original case report forms
This study reported data on race for 185 adult patients, ages ≥ 18 years, from 11 sites that enrolled 4 to 46 patients. The 4 patients from our site are omitted to avoid analysis of duplicate patients; they are included in our Oklahoma data. The 23 patients from Canada also are omitted since this analysis is limited to the United States census data for adults ages ≥ 18 years that were obtained from the United States Census Bureau; Census 2000, PL 94-171 Summary File, using American Fact Finder; http://factfinder.census.gov (July 27, 2004). Data for the cities where the studies were performed were averaged in proportion to the number of patients enrolled from each city. Data from the individual sites were not included in the published article7 but were obtained from Amgen, Thousand Oaks, CA
Unpublished data from our record review to begin an Oklahoma ITP Registry. Census data were obtained from the United States Census Bureau; Census 2000 Summary File 1; using American Fact Finder; http://factfinder.census.gov (August 16, 2004). Data for individual Oklahoma counties were averaged in proportion to the number of patients living in each county