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Table 2 Characteristics of subjects by baseline Cystatin C quartiles

From: Cystatin C and long term risk of community-acquired sepsis: a population-based cohort study

Characteristic

Cyst-C

Cyst-C

Cyst-C

Cyst-C

p-value*

<0.83 mg/dL

0.83-0.94 mg/dL

0.95-1.12 mg/dL

>1.12 mg/dL

Ā 

(n=7,146)

(n=6,732)

(n=7,031)

(n=6,757)

Ā 

DEMOGRAPHICS

Ā Ā Ā Ā Ā 

Age mean (SD)

59.8 (8.0)

63.3 (8.4)

66.2 (8.8)

70.3 (9.1)

<0.001

Sex (%)

Ā Ā Ā Ā 

<0.001

Male

59.1

45.9

48.8

46.6

Ā 

Female

41.0

54.1

51.2

53.4

Ā 

Race (%)

Ā Ā Ā Ā 

<0.001

White

52.9

60.2

63.5

61.6

Ā 

Black

47.1

39.8

36.6

38.5

Ā 

Education (%)

Ā Ā Ā Ā Ā 

Less than high school

8.8

10.2

12.8

17.4

Ā 

High school graduate

23.6

24.8

26.3

28.7

Ā 

Some college

26.3

27.0

27.0

27.0

Ā 

College or higher

41.3

38.0

33.8

27.0

Ā 

Missing N (%)

1 (0.0)

6 (0.1)

4 (0.1)

10 (0.2)

Ā 

Income (%)

Ā Ā Ā Ā 

<0.001

<$20 k

14.8

17.2

20.9

28.1

Ā 

$20k-$34 k

22.8

25.3

28.5

33.7

Ā 

$35k-$74 k

36.3

35.3

35.0

29.7

Ā 

ā‰„$75 k

26.2

22.2

15.6

8.5

Ā 

Missing N (%)

812 (11.4)

795 (11.8)

882 (12.5)

879 (13.0)

Ā 

Geographic region (%)

Ā Ā Ā Ā 

0.012

Non-belt/buckle

44.4

45.3

43.3

44.3

Ā 

Stroke belt

35.4

33.6

36.1

34.0

Ā 

Stroke buckle

20.2

21.1

20.6

21.8

Ā 

HEALTH BEHAVIORS

Ā Ā Ā Ā Ā 

Tobacco Use (%)

Ā Ā Ā Ā 

<0.001

Current

12.9

14.5

15.1

15.4

Ā 

Past

38.4

39.6

41.6

42.1

Ā 

Never

48.7

45.9

43.3

42.5

Ā 

Missing N (%)

33 (0.5)

24 (0.4)

25 (0.4)

19 (0.3)

Ā 

Alcohol use (%)

Ā Ā Ā Ā 

<0.001

Heavy

5.8

4.6

3.6

2.2

Ā 

Moderate

40.1

36.3

32.2

25.4

Ā 

None

54.1

59.1

64.2

72.5

Ā 

Missing N (%)

134 (1.9)

124 (1.8)

128 (1.8)

157 (2.3)

Ā 

CHRONIC MEDICAL CONDITIONS

Ā Ā Ā Ā Ā 

Cancer (%)

6.2

7.4

9.5

12.1

<0.001

Chronic lung disease (%)

7.3

8.4

9.1

11.8

<0.001

Coronary artery disease (%)

10.2

13.3

18.1

30.2

<0.001

Diabetes (%)

17.4

18.1

20.5

33.1

<0.001

Dyslipidemia (%)

49.7

56.1

61.9

67.7

<0.001

Hypertension (%)

45.8

52.7

61.5

76.8

<0.001

Myocardial infarction (%)

7.6

9.5

12.7

21.2

<0.001

Obesity (%)

43.7

50.2

56.1

62.9

<0.001

Stroke (%)

3.4

4.1

6.0

11.4

<0.001

BIOMARKERS

Ā Ā Ā Ā Ā 

Serum creatinine-based estimated glomerular filtration rate (eGFR) <60 mg/min/1.73m2 (%)

0.3

1.0

4.5

40.7

<0.001

Missing N (%)

6 (0.1)

7 (0.1)

6 (0.1)

11 (0.2)

Ā 

Urinary albumin-to-creatinine ratio (ACR) ā‰„30 mg/g

9.0

9.4

12.7

29.7

<0.001

Missing N (%)

193 (2.7)

202 (3.0)

220 (3.1)

333 (4.9)

Ā 

Serum high-sensitivity C-reactive protein (hsCRP) >3.0 mg/dL

31.9

36.3

42.9

51.8

<0.001

Missing N (%)

4 (0.1)

3 (0.4)

6 (0.1)

4 (0.1)

Ā 
  1. *Based on chi-square test for categorical variables and t-test for continuous variables. Based on 29,696 participants with follow-up data available. 2,030 (6.8%) missing Cystatin C measurement.