Table 1 Baseline characteristics

Demographics

 Mean age (SD), years

Age (n (%))

 18 to <35

 35 to <60

 60 to <70

 ≥70

Women (n (%))

Race (n (%))

 Caucasian

 Asian

 Black

 Indian subcontinent

 Aboriginal

 Other

 Unknown

 Missing

Income quintile (n (%))

 One (lowest)

 Two

 Three

 Four

 Five (highest)

Rural location (n (%))

Year of cohort entry (n (%))

 2003–2006

 2007–2009

 2010–2012

Time since transplant, median (IQR), years

Year of kidney transplant (n (%))

 1988–1992

 1993–1997

 1998–2002

 2003–2007

 2008–2012

Time on dialysis prior to transplant, median (IQR), years

Time on dialysis prior to transplant (n (%)), years

 0 to <1

 1 to <2

 2 to <3

 3 to <4

 ≥4

Cause of end stage renal disease (n (%))

 Glomerulonephritis

 Hypertension

 Pyelonephritis/interstitial

 Cystic kidney disease

 Diabetes

 Other

 Unknown

Type of donor (n (%))

 Deceased

 Living

 Missing

Comorbidities (n (%))

 Coronary artery disease

 Diabetes

 Hypertension

 Congestive heart failure

 Chronic liver disease

 Chronic obstructive pulmonary disease

 Peripheral vascular disease

 Stroke/transient ischemic attack

Baseline laboratory measurements

 Serum creatinine, median (IQR), umol/L

 eGFR, median (IQR), ml/min/1.73 m^2a

eGFR category (n (%)), ml/min/1.73 m²

 <15

 15 to <30

 30 to <45

 45 to <60

 ≥60

AKI definitions (n (%))^b

 Any AKI

 AKIN stage 1

 AKIN stage 2

 AKIN stage 3