Table 1 Baseline characteristics of participants by GV quartiles.

From: Association between glycemic variability and mortality in critically ill patients with heart failure

Variables

Total

(n = 23 744)

Q1

(n = 5 936)

Q2

(n = 5 936)

Q3

(n = 5 936)

Q4

(n = 5 936)

elCU-CRD database

11,037 (46.5)

2199 (37)

2755 (46.4)

2988 (50.3)

3095 (52.1)

Demographics

Age, (year)

71.6 ± 13.5

72.0 ± 14.3

71.9 ± 13.7

71.7 ± 13.1

70.6 ± 12.9

Gender male, n (%)

13,011 (54.8)

3396 (57.2)

3310 (55.8)

3237 (54.5)

3068 (51.7)

Race, n (%)

     

White

16,859 (71.0)

4331 (73.0)

4282 (72.1)

4187 (70.5)

4059 (68.4)

Other

6885 (29.0)

1605 (27.0)

1654 (27.9)

1749 (29.5)

1877 (31.6)

Vital signs

Heart rate, (min − 1)

88.6 ± 21.7

88.0 ± 21.0

88.4 ± 20.7

89.1 ± 21.3

89.1 ± 23.7

MBP, (mmHg)

82.8 ± 21.1

83.5 ± 20.0

82.7 ± 22.9

82.1 ± 20.8

82.7 ± 20.6

BMI, (kg/m2)

28.2 (24.0, 33.2)

28.0 (24.0, 32.8)

28.0 (24.0, 33.2)

28.3 (24.2, 33.4)

28.4 (24.0, 33.7)

SOFA score

5.0 (2.0, 7.0)

4.0 (2.0, 6.0)

5.0 (2.0, 7.0)

5.0 (3.0, 8.0)

5.0 (3.0, 8.0)

Co-morbidities, n (%)

Hypertension

17,973 (75.7)

4528 (76.3)

4420 (74.5)

4490 (75.6)

4535 (76.4)

Diabetes

7539 (31.8)

1225 (20.6)

1367 (23.0)

1992 (33.6)

2955 (49.8)

Myocardial infarction

6200 (26.1)

1512 (25.5)

1478 (24.9)

1507 (25.4)

1703 (28.7)

Atrial fibrillation

10,114 (42.6)

2779 (46.8)

2685 (45.2)

2494 (42.0)

2156 (36.3)

Stroke, n (%)

1929 (8.1)

572 (9.6)

504 (8.5)

442 (7.4)

411 (6.9)

COPD

7581 (31.9)

1866 (31.4)

1897 (32.0)

1936 (32.6)

1882 (31.7)

Renal failure

6280 (26.4)

1482 (25.0)

1447 (24.4)

1615 (27.2)

1736 (29.2)

Cancer

1763 (7.4)

494 (8.3)

438 (7.4)

429 (7.2)

402 (6.8)

Laboratory tests

Glucose

First, (mg/dl)

130.0 (106.0, 171.0)

117.0 (102.0, 137.0)

128.0 (106.0, 155.0)

140.0 (109.0, 178.0)

163.0 (112.0, 241.0)

Mean, (mg/dl)

131.0 (112.3, 160.6)

115.5 (102.8, 133.9)

124.0 (110.4, 144.1)

135.8 (117.2, 164.1)

158.0 (132.2, 196.8)

SD

27.7 (16.7, 47.2)

11.2 (7.5, 14.4)

21.8 (18.5, 25.9)

35.0 (29.0, 43.4)

65.4 (50.9, 89.0)

Frequency*

1.8 (1.4, 2.5)

1.7 (1.3, 2.3)

1.8 (1.4, 2.4)

1.9 (1.4, 2.5)

1.9 (1.4, 2.5)

GV

0.2 (0.1, 0.3)

0.1 (0.1, 0.1)

0.2 (0.2, 0.2)

0.3 (0.2, 0.3)

0.4 (0.3, 0.5)

Hemoglobin, (g/dl)

10.2 (8.6, 11.9)

10.4 (8.8, 12.1)

10.2 (8.6, 12.0)

10.1 (8.6, 11.8)

10.1 (8.5, 11.8)

WBC, (K/µL)

10.5 (7.6, 14.6)

9.9 (7.3, 13.5)

10.5 (7.7, 14.7)

10.6 (7.6, 14.9)

10.9 (7.8, 15.2)

Platelet, (K/µL)

192.0 (141.0, 254.0)

190.0 (143.0, 250.0)

189.0 (139.0, 251.0)

191.0 (141.0, 254.0)

197.0 (144.0, 260.0)

Creatinine, (mg/dl)

1.3 (0.9, 2.1)

1.2 (0.9, 1.8)

1.3 (0.9, 2.0)

1.4 (1.0, 2.2)

1.5 (1.0, 2.4)

BUN, (mg/dl)

29.0 (19.0, 46.0)

25.0 (17.0, 39.0)

28.0 (18.0, 44.0)

30.0 (19.0, 47.0)

33.0 (21.0, 52.0)

Potassium, (mmol/L)

4.3 ± 0.8

4.2 ± 0.7

4.2 ± 0.7

4.3 ± 0.8

4.3 ± 0.8

Sodium, (mmol/L)

137.5 ± 8.2

137.9 ± 7.2

137.6 ± 8.1

137.5 ± 8.4

137.0 ± 9.1

Chloride, (mmol/L)

101.9 ± 6.8

102.4 ± 6.3

102.1 ± 6.9

101.8 ± 6.9

101.6 ± 7.1

Calcium, (mmol/L)

8.5 ± 0.8

8.5 ± 0.7

8.5 ± 0.8

8.4 ± 0.8

8.5 ± 0.8

Magnesium, (mmol/L)

2.0 ± 0.5

2.0 ± 0.5

2.1 ± 0.5

2.1 ± 0.5

2.1 ± 0.5

Treatments, n (%)

ACEI/ARB

4000 (16.8)

1056 (17.8)

966 (16.3)

965 (16.3)

1013 (17.1)

Beta-blockers

11,439 (48.2)

3071 (51.7)

2853 (48.1)

2786 (46.9)

2729 (46.0)

Anti-Platelet drugs

11,247 (47.4)

2780 (46.8)

2787 (47)

2804 (47.2)

2876 (48.5)

Diuretics

14,667 (61.8)

3589 (60.5)

3718 (62.6)

3710 (62.5)

3650 (61.5)

Digoxin

6250 (26.3)

1292 (21.8)

1566 (26.4)

1684 (28.4)

1708 (28.8)

Statin

9340 (39.3)

2396 (40.4)

2266 (38.2)

2276 (38.3)

2402 (40.5)

Insulin

11,145 (46.9)

2159 (36.4)

2538 (42.8)

2931 (49.4)

3517 (59.2)

Hormone drug

5014 (21.1)

863 (14.5)

1152 (19.4)

1465 (24.7)

1534 (25.8)

vasoactive agents

10,220 (43.0)

2279 (38.4)

2642 (44.5)

2669 (45.0)

2630 (44.3)

Hemodialysis

2145 (9.0)

319 (5.4)

495 (8.3)

632 (10.6)

699 (11.8)

Mechanical ventilation

15,365 (64.7)

3804 (64.1)

3880 (65.4)

3873 (65.2)

3808 (64.2)

Mortality, n (%)

In-hospital

3566 (15.0)

597 (10.1)

857 (14.4)

1001 (16.9)

1111 (18.7)

30-day

4171 (17.6)

795 (13.4)

1011 (17)

1138 (19.2)

1227 (20.7)

LOS of ICU, (day)

3.1 (1.9, 5.4)

2.4 (1.7, 3.8)

3.3 (2.1, 5.9)

3.7 (2.1, 6.8)

3.2 (2.0, 6.0)

  1. Abbreviations: GV, glycemic variability; BMI, body mass index; MBP, mean blood pressure; SOFA, sequential organ failure assessment; COPD, chronic obstructive pulmonary disease; SD, standard deviation; WBC, white blood cell; BUN, blood urea nitrogen; ACEI/ARB, angiotensin converting enzyme inhibitors/angiotension receptor antagonists; ICU, intensive care unit.
  2. Note: * Frequency represents average daily blood glucose monitoring frequency calculated as total measurements divided by ICU length of stay.