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Table 1 Existing CKD cohort studies

From: The natural history of, and risk factors for, progressive Chronic Kidney Disease (CKD): the Renal Impairment in Secondary care (RIISC) study; rationale and protocol

Cohort

Population

Year commenced

Number recruited

Chronic Renal Impairment in Birmingham (CRIB) [30]

CKD with Creatinine >1.47 mg/dl (130 mmol/l) pre-dialysis

1997

369 (completed)

Mild to Moderate Kidney Disease study (MMKD) [31]

Patients who had attended secondary care nephrology clinics at least twice

1997

277 (completed)

Longitudinal Chronic Kidney Disease Study (LCKD) [32]

Secondary care, GFR < 50 ml/min on two occasions

2000

820 (completed)

Chronic Renal Insufficiency Standards Implementation Study (CRISIS) [33]

Secondary care stage 3–5 CKD (pre-dialysis)

2002

1325 (completed)

Chronic Renal Insufficiency Cohort (CRIC) [34, 35]

Secondary care, all CKD stages

2003

3612 (still recruiting)

Study for the evaluation of early kidney disease (SEEK) [36]

Predominantly primary care (29% from secondary care), inclusion based upon single eGFR ≤60 ml/min

2004

1814 (completed)

Renal Risk In Derby (R2ID) [37]

Primary care, eGFR 30-59 ml/min on more than two occasions three months apart

2008

1741 (completed)