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Table 2 Socio-demographic and clinical characteristics of hospitalized patients with AKI in England in 2019

From: Do outcomes for patients with hospital-acquired Acute Kidney Injury (H-AKI) vary across specialties in England?

  

All AKI

Peak AKI 2 & 3 only

Total number of patients N (%)

93,196 (100)

23,993 (100)

Age at alert (Median IQR)

 

78.2 (67.2–86.0)

76.8 (66.1–85.1)

  

N (%)

N (%)

Sex

Male

45,069 (48.4)

12,072 (50.3)

Female

48,127 (51.6)

11,921 (49.7)

Ethnicity

White

77,853 (91.4)

19,950 (91.5)

Asian

4,042 (4.7)

1,016 (4.7)

Black

1,772 (2.1)

444 (2)

Mixed

362 (0.4)

101 (0.5)

Other

1,178 (1.4)

285 (1.3)

Deprivation quintile (IMD)

1 (Least deprived)

16,084 (17.3)

4,019 (16.8)

2

17,985 (19.3)

4,539 (18.9)

3

18,735 (20.1)

4,818 (20.1)

4

19,520 (21)

5,128 (21.4)

5 (Most deprived)

20,872 (22.4)

5,489 (22.9)

Reweighted Charlson Comorbidity Index

CCI = 0

27,390 (29.4)

6,494 (27.1)

CCI = 1

14,645 (15.7)

3,444 (14.4)

CCI = 2

19,204 (20.6)

5,008 (20.9)

CCI > 2

31,957 (34.3)

9,047 (37.7)

Peak AKI stage

1

69,203 (74.3)

 

2

14,749 (15.8)

14,749 (61.5)

3

9,244 (9.9)

9,244 (38.5)

Hospital setting

Medical ward

66,189 (71.0)

17,132 (71.4)

Surgical ward

23,419 (25.1)

5,720 (23.8)

Acute care setting

1,310 (1.4)

511 (2.1)

Renal Unit

1,047 (1.1.)

321 (1.3)

Other

1,231 (1.3)

309 (1.3)

Admission method

Emergency

82,835 (88.9)

21,324 (88.9)

Elective

10,361 (11.1)

2,669 (11.1)

Season

Autumn

21,737 (23.3)

5,492 (22.9)

Spring

24,033 (25.8)

6,099 (25.4)

Summer

21,531 (23.1)

5,502 (22.9)

Winter

25,895 (27.8)

6,900 (28.8)

Primary diagnosis of infection

No

70,506 (75.7)

17,776 (74.1)

Yes

22,690 (24.4)

6,217 (25.9)

  1. RCCI - Reweighted Charlson Comorbidity Index score