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Table 1 Baseline demographic and clinical characteristics among groups

From: Association of early dietary fiber intake and mortality in septic patients with mechanical ventilation based on MIMIC IV 2.1 database: a cohort study

Variables

Total

(n = 1057)

Group by Fiber index (g/(%))

P value

LFI group

(n = 655)

MFI group

(n = 194)

HFI group

(n = 208)

General Characteristics

Sex (Male)

562 (53.169)

349 (53.282)

88 (45.361)

125 (60.096)

0.013

Age(year)

64.8 (53.4, 75.2)

64.6 (52.9, 75.3)

64.5 (53.3, 74.4)

66.2 (55.4, 75.2)

0.52

Age(year)

    

0.702

 < 65

535 (50.615)

337 (51.45)

99 (51.031)

99 (47.596)

 

 65 ~ 80

359 (33.964)

213 (32.519)

68 (35.052)

78 (37.5)

 

 ≥ 80

163 (15.421)

105 (16.031)

27 (13.918)

31 (14.904)

 

BMI (kg/m2)

28.1 (23.7, 34.2)

28.5 (24.0, 34.6)

27.4 (23.4, 33.3)

27.4 (23.4, 33.0)

0.196

BMI (kg/m2)

    

0.66

 < 18.5

37 (3.500)

20 (3.053)

7 (3.608)

10 (4.808)

 

 18.5 ~ 25

298 (28.193)

181 (27.634)

58 (29.897)

59 (28.365)

 

 25 ~ 30

290 (27.436)

174 (26.565)

53 (27.32)

63 (30.288)

 

 ≥ 30

432 (40.870)

280 (42.748)

76 (39.175)

76 (36.538)

 

Scores in ICU

     

 SOFA

10.0 (7.0, 13.0)

10.0 (8.0, 13.0)

10.0 (7.0, 12.0)

10.0 (7.0, 12.0)

0.046

 SASPII

45.0 (35.0, 56.0)

46.0 (36.0, 58.0)

43.0 (34.0, 53.0)

44.0 (35.0, 55.0)

0.051

 CCI

6.0 (4.0, 8.0)

6.0 (4.0, 8.0)

5.0 (3.0, 8.0)

6.0 (4.0, 8.0)

0.581

Medicine use within 72 h

 Number of antibiotics

3.0 (2.0, 4.0)

3.0 (2.0, 4.0)

3.0 (2.0, 4.0)

3.0 (2.0, 4.0)

0.315

 Number of antibiotics

    

0.819

   < 3

335 (31.693)

209 (31.908)

58 (29.897)

68 (32.692)

 

   ≥ 3

722 (68.307)

446 (68.092)

136 (70.103)

140 (67.308)

 

 Norepinephrine equivalents

0.1 (0.0, 1.0)

0.1 (0.0, 1.7)

0.1 (0.0, 0.3)

0.1 (0.0, 0.2)

 < 0.001

 Vasoactive agents

    

0.008

   No

329 (31.126)

182 (27.786)

67 (34.536)

80 (38.462)

 

   Yes

728 (68.874)

473 (72.214)

127 (65.464)

128 (61.538)

 

 PPI OR H2RA

    

0.942

   No

37 (3.500)

22 (3.359)

7 (3.608)

8 (3.846)

 

   Yes

1020 (96.500)

633 (96.641)

187 (96.392)

200 (96.154)

 
  1. Values are n (%) or median (25th–75th percentile)
  2. Abbreviations: BMI Body Mass Index, SOFA Sequential Organ Failure Assessment, SASPII Simplified Acute Physiology Score II, CCI Charlson comorbidity index, PPI Proton pump inhibitors, H2RA H2 receptor antagonists