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Table 1 Summary of patient details

From: The accuracy of diagnostic coding for acute kidney injury in England – a single centre study

  2005 2010
  N (%) 95% CI N (%) 95% CI
Number of records examined 58 (100%)   63 (100%)  
Died during admission 30 (50%) 37-63% 29 (46%) 33-59%
Male gender 21 (36%) 23-49% 15 (24%) 13-35%
Diabetic 25 (43%) 30-56% 21 (33%) 21-45%
Hypertensive 18 (31%) 19-43% 19 (30%) 19-42%
Previous IHD or CVD 11 (19%) 9-29% 8 (13%) 4-21%
Heart failure 13 (22%) 11-33% 14 (22%) 12-33%
Recent diarrhoea/vomiting 11 (19%) 9-29% 9 (14%) 5-23%
Admitted to ITU 10 (17%) 7-27% 9 (14%) 5-23%
Haemodialysis/haemofiltration 29 (50%) 37-63% 29 (46%) 33-59%
Pre-admission drug treatment  
ACE Inhibitor 19 (35%) 22-48% 14 (23%) 12-34%
ARB 5 (9%) 1-17% 9 (15%) 6-24%
Loop diuretic 29 (55%) 37-63% 18 (29%) 17-40%
Thiazide diuretic 5(9%) 1-16% 3 (5%) 0-10%
NSAID 6 (11%) 2-19% 3 (5%) 0-11%
Spironolactone 8 (15%) 5-24% 6 (10%) 2-18%
  Median (IQR) Median (IQR)
Age (years) 79 (70–85) 83 (73–88)
Biochemical variables  
Baseline eGFR (ml/min/1.73m 2 ) 49 (29–62) 45 (33–65)
Baseline creatinine (μmol/L) 120 (90–170) 120 (90–155)
Admission creatinine (μmol/L) 265 (178–405) 252 (191–435)
Admission potassium (mmol/L) 5.0 (4.3-6.0) 4.5 (4.1-5.9)
Admission bicarbonate (mmol/L) 17.2 (12.9-21.1) 21.5 (16.8-26.1)
Admission systolic BP (mmHg) 122 (105–143) 127 (111–145)
  1. Count data are expressed as % (N), with 95% CI. Continuous data are expressed as median (IQR). IHD ischaemic heart disease; CVD cerebrovascular disease; ITU Intensive therapy unit; eGFR estimated glomerular filtration rate; ACE Angiotensin Converting Enzyme; BP blood pressure; ARB Angiotensin Receptor Blocker; NSAID Non-steroidal anti-inflammatory drug.