Table 1 Baseline characteristics of included studies
Study | Journal | Study type | Data type (single/multi center, claimed data) | Data base | Studied year (Donor) | Exclusion for donor | Studied year (control) | Standard of matching | Exclusion for control | How to calculate GFR | Matched control | Matching variables | Conflict of interests |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lam et al. 2012 [15] | Nephrol Dial Transplant | Retrospective cohort | Claimed data | Cohort study, Canada | 1992–2009 | none—all donor | 1991.7.1-index date |  | Genitourinary disease, Diabetes, Hypertension, Cancer, Cardiovascular disease, Pulmonary disease, Liver disease, Rheumatological conditions, Chronic infections, History of nephrology consultation, Frequent physician visits (4 / 2yrs), Failed to see a physician at least once in the two years before the index date | CKD | 1:10 matched | Age Sex Index date residence (rural vs. urban) Income | None |
Epidemiology Collaboration (CKD-EPI) equation | |||||||||||||
Muzaale et al. 2014 [13] | JAMA | Retrospective cohort | Claimed data | Cohort study, United states | 1994–2011 | none—all donor | 1988–1994(enroll) | Healthy non-donor population | Third National Health and Nutrition Examination Survey (NHANES III)—Answered "Yes" to any of these questions by self-report survey | ESRD | 1:1 matched | Age, Sex, Race/ethnicity, Education background, BMI at the time of enrollment, History of cigarette smoking, and SBP | United Network for Organ Sharing Institutional grant support from the National Institutes of Health |
Epidemiology Collaboration (CKD-EPI) equation | |||||||||||||
Kim et al. 2019 [16] | Renal Epidemiology | Retrospective cohort | Single center | Hospital data | 2002–2015 | Missing estimated GFR or abdominal US, A history of cancer, A history of CKD, Proteinuria at baseline, CKD at baseline, Chronic kidney disease, renal tumor, renal cancer on US ;and/or partial or total nephrectomy due to renal dz including Renal TB, renal stone, nephritis, renal tumor | 2002–2015 |  | Same as donor exclusion | Epidemiology Collaboration (CKD-EPI) equation | Simple comparison between the two groups |  | None |
Mjoen et al. 2013 [14] | Kidney International | Retrospective cohort | Claimed data | National data | 1963–2007 | eGFR < 70, Age > 70, Age < 20, BMI > 30, BMI < 17, BP > 140/90, BP medication | 1985–1987(enroll) |  | eGFR < 70, Age > 70, Age < 20, BMI > 30, BMI < 17, BP > 140/90, BP medication, Diabetes, CVD, Reduced general health | Epidemiology Collaboration (CKD-EPI) equation | Simple comparison between the two groups |  | None |
Haugen et al. 2020 [17] | Transplantation International | Retrospective cohort | Single center | Cohort study | 1972–2007 | Missing BP baseline/at follow-up, Age > 70 years, Use of BP medication, BMI > 30.0 kg/m2, BP > 140/90, CKD-EPI GFR < 70 ml/min/1.73m2, Fasting glucose > 7 mmol/l Comorbidity | 1984–2013 (enroll) HUNT surveys HUNT1 (1984–1986) HUNT2 (1995–1997) HUNT3 (2006–2008) |  | Same as donor exclusion | Epidemiology Collaboration (CKD-EPI) equation | General population |  | MSD Europe AstraZeneca Boehringer Ingelheim Novo Nordisk Pharma, Lilly Sanofi-Aventis Roche |