Skip to main content

Table 1 Elderly patients visiting emergency department for medical illnesses during the study period

From: Thrombocytopenia on the first day of emergency department visit predicts higher risk of acute kidney injury among elderly patients

Characteristics

Total

With thrombocytopenia

Without thrombocytopenia

p value

Demographic features

 Age (years)

80.7 ± 8.2

78.5 ± 9.1

81.3 ± 7.8

0.1

 Gender (male %)

68 (50)

16 (52)

52 (50)

0.84

Comorbidities

 Diabetes mellitus (%)

53 (39)

14 (45)

39 (37)

0.43

 Hypertension (%)

78 (57)

11 (35)

67 (64)

<0.01

 Heart failure (%)

23 (17)

4 (13)

19 (18)

0.5

 Coronary artery disease (%)

11 (8)

2 (6)

9 (9)

0.71

 Peripheral artery occlusive disease (%)

9 (7)

3 (10)

6 (6)

0.44

 Chronic obstructive pulmonary disease (%)

15 (11)

2 (6)

13 (12)

0.36

 Chronic kidney disease (%)

54 (40)

14 (45)

40 (38)

0.48

 Previous or active malignancy (%)

35 (26)

8 (26)

27 (26)

0.99

 Peptic ulcer disease (%)

12 (9)

2 (6)

10 (10)

0.6

 Charlson comorbidity index

7 (6–9)

7 (5–9)

8 (6–9)

0.1

Initial impression (%)

   

0.23

 Cardio- or cerebro-vascular events

11 (8)

3 (10)

8 (8)

 

 Pulmonary diseases

63 (46)

10 (32)

53 (50)

 

 Gastrointestinal and hepatic diseases

21 (15)

9 (29)

12 (11)

 

 Renal diseases

14 (10)

3 (10)

11 (10)

 

 Infection of unknown origin

11 (8)

3 (10)

8 (8)

 

 Miscellaneous

16 (12)

3 (10)

13 (12)

 

First vital signs obtained on ED evaluation

 Systolic blood pressure (mmHg)

131 (110.3–153)

133 (101–146)

130 (112–154)

0.89

 Diastolic blood pressure (mmHg)

73 (62–84)

71 (60–82)

73 (62–84)

0.73

 Heart rate (/min)

96.7 ± 20.8

96.8 ± 27.1

96.7 ± 18.7

0.98

 Body temperature (°C)

37.2 ± 1.2

37.2 ± 1.2

37.3 ± 1.1

0.77

 Respiratory rate (/min)

20 (18–22)

18 (18–22)

20 (18–22)

0.88

First laboratory data on ED

 Leukocyte counts (K/μL)

11.4 (7.9–15.6)

8.2 (4.9–12.3)

12 (8.4–16.5)

< 0.01

 Hemoglobin (g/dL)

11.4 (9.6–12.8)

11.3 (8.8–12.4)

11.6 (9.6–13.1)

0.47

 Platelet counts (K/μL)

225 ± 102

102 ± 51

262 ± 82

< 0.01

 Baseline eGFR (ml/min/1.73 m2)

70.3 (42.7–88)

68.9 (39.3–84.4)

70.3 (42.7–89.8)

0.46

 Serum creatinine on ward admission (mg/dL)

1.1 (0.7–1.9)

1.5 (0.9–2.1)

1 (0.7–1.7)

0.1

 ED length of stay (days)

4.5 (3–6)

4 (3–6)

5 (3–6)

0.64

  1. Data are expressed as mean ± standard deviation or median with 25% and 75% quartiles for continuous variables, and number (percentage) for categorical variables
  2. Abbreviation: ED emergency department, eGFR estimated glomerular filtration rate