Main characteristics of case-control studies evaluating the association between blood transfusions and non-Hodgkin lymphoma
| Author . | Year . | Country . | Ascertainment period . | Source cases, no. . | Source controls, no. . | Assessment NHL diagnosis . | Assessment RBC transfusion . | Matching and adjustments . |
|---|---|---|---|---|---|---|---|---|
| Brandt6 | 1996 | Sweden | 1991-1995 | Southern Swedish Regional Tumor Registry, 280 | Population-based, General Population Registry, 1827 | Registry records | Questionnaire | Age, sex, residence |
| Adami5 | 1997 | Sweden | Varied-1991 | Swedish Inpatient Register, 361 | Swedish Inpatient Register, 705 | Independent pathology review | Medical records | Age, sex, diagnosis, procedure, date of discharge, hospital |
| Nelson10 | 1998 | United States | 1989-1992 | Los Angeles County Cancer Surveillance Program, 378 | Population-based, Los Angeles County, 378 | Independent pathology review | Interviews | Age, sex, race, IV drug use |
| Maguire-Boston9 | 1999 | United States | 1975-1993 | Mayo Clinic records, Olmsted County, MN, 37 | Population-based, Mayo Clinic records, 174 | Pathology records | Medical records | Age, sex, clinic number |
| Tavani11 | 1999 | Italy | 1983-1998 | Newly hospitalized patients, Milan and Porderone hospitals, 385 | Newly hospitalized patients, Milan and Porderone hospitals, 1297 | Pathology records | Medical records | Age, sex, area of residence, education |
| Chow8 | 2002 | United States | 1988-1995 | Northern California Cancer Center Case Ascertainment system, 1591 | Northern California Cancer Center Case Ascertainment system, 2515 | Independent pathology review | Face-to-face interviews | Age, sex, HIV status |
| Zhu13 | 2003 | United States | 1984-1988 | 8 cancer registries (Atlanta, Detroit, San Francisco, Seattle, Miami, Connecticut, Iowa and Kansas), 1511 | Population-based, Atlanta, Detroit, San Francisco, Seattle, Miami, Connecticut, Iowa. and Kansas, 1910 | Cancer Registries records | Telephone interviews | Age, cancer registry |
| Zhang12 | 2004 | United States | 1996-2000 | Yale Cancer Center Rapid Case Ascertainment Shared Resource, 600 | Population-based, Connecticut, 712 | Independent pathology review | Face-to-face interviews | Age, family history of NHL in first-degree relatives |
| Cerhan7 | 2008 | United States | 1998-2000 | Iowa, Seattle, Los Angeles, and Detroit SEER cancer registries, 759 | Population-based, Iowa, Seattle, Los Angeles and Detroit, 589 | Registry records | Computer-assisted and mailed questionnaires | Age, sex, race, study center |
| Author . | Year . | Country . | Ascertainment period . | Source cases, no. . | Source controls, no. . | Assessment NHL diagnosis . | Assessment RBC transfusion . | Matching and adjustments . |
|---|---|---|---|---|---|---|---|---|
| Brandt6 | 1996 | Sweden | 1991-1995 | Southern Swedish Regional Tumor Registry, 280 | Population-based, General Population Registry, 1827 | Registry records | Questionnaire | Age, sex, residence |
| Adami5 | 1997 | Sweden | Varied-1991 | Swedish Inpatient Register, 361 | Swedish Inpatient Register, 705 | Independent pathology review | Medical records | Age, sex, diagnosis, procedure, date of discharge, hospital |
| Nelson10 | 1998 | United States | 1989-1992 | Los Angeles County Cancer Surveillance Program, 378 | Population-based, Los Angeles County, 378 | Independent pathology review | Interviews | Age, sex, race, IV drug use |
| Maguire-Boston9 | 1999 | United States | 1975-1993 | Mayo Clinic records, Olmsted County, MN, 37 | Population-based, Mayo Clinic records, 174 | Pathology records | Medical records | Age, sex, clinic number |
| Tavani11 | 1999 | Italy | 1983-1998 | Newly hospitalized patients, Milan and Porderone hospitals, 385 | Newly hospitalized patients, Milan and Porderone hospitals, 1297 | Pathology records | Medical records | Age, sex, area of residence, education |
| Chow8 | 2002 | United States | 1988-1995 | Northern California Cancer Center Case Ascertainment system, 1591 | Northern California Cancer Center Case Ascertainment system, 2515 | Independent pathology review | Face-to-face interviews | Age, sex, HIV status |
| Zhu13 | 2003 | United States | 1984-1988 | 8 cancer registries (Atlanta, Detroit, San Francisco, Seattle, Miami, Connecticut, Iowa and Kansas), 1511 | Population-based, Atlanta, Detroit, San Francisco, Seattle, Miami, Connecticut, Iowa. and Kansas, 1910 | Cancer Registries records | Telephone interviews | Age, cancer registry |
| Zhang12 | 2004 | United States | 1996-2000 | Yale Cancer Center Rapid Case Ascertainment Shared Resource, 600 | Population-based, Connecticut, 712 | Independent pathology review | Face-to-face interviews | Age, family history of NHL in first-degree relatives |
| Cerhan7 | 2008 | United States | 1998-2000 | Iowa, Seattle, Los Angeles, and Detroit SEER cancer registries, 759 | Population-based, Iowa, Seattle, Los Angeles and Detroit, 589 | Registry records | Computer-assisted and mailed questionnaires | Age, sex, race, study center |
NHL indicates non-Hodgkin lymphoma; RBC, red blood cell; IV, intravenous; and SEER, Surveillance, Epidemiology and End Results Program.