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Table 2 Characteristics of included studies in the meta-analysis

From: Is it time to reconsider the administration of thiamine alone or in combination with vitamin C in critically ill patients? A meta-analysis of clinical trial studies

First author (year)

Country

Type of study

Primary diagnosis

Age, year (mean)

Subjects

Vitamin assessment

Intervention

Placebo type

Main outcomes

     

Control/ Intervention

Sex (M, %)

 

Dose (g/day)

Duration (days)

  

Iglesias (2020) [23]

USA

RCT

Sepsis

68.5

69/68

45

AA

C1: 6

B1: 0.4

Hydrocortisone: 0.2

4

Normal saline

PE: Vasopressors duration administration

Null: –

NE: Δ SOFA, mortality, LOS

Chang (2020) [25]

China

RCT

Sepsis

61.65

40/38

54

C: 6

B1: 0.4

Hydrocortisone: 0.2

4

4

7

Either normal saline or routine treatment

PE: –

Null: Δ SOFA, hypernatremia

NE: mortality, ICU LOS, vasopressors duration, length of Mechanical ventilation

Donnino (2016) [31]

USA

RCT

Septic– shock

67

45/43

59

Thiamine

B1: 0.4

7

Normal saline

PE: –

Null: –

NE: APACHE II, Δ SOFA, LOS, mortality

Blakrishian (2019) [24]

India

RCT

Septic –shock

52

12/12

62

C: 6

B1: 0.4

Hydrocortisone: 0.2

4

Normal saline

PE: Dose of noradrenaline and vasopressin

Null: –

NE: Δ SOFA, mortality

Fujii (2020) [26]

Australia

New-Zealand

Brazil

RCT

Septic –shock

61.7

104/107

63

C: 6

B1: 0.4

Hydrocortisone: 0.2

Up to 10 days

Hydro–cortisone: 0.2

PE: –

Null: –

NE: Survival, vasopressors-free days, mortality, LOS, Δ SOFA, ventilator free days, ICU free days

Harun (2019) [12]

Malaysia

RCT

Septic -shock

65

33/32

58

B1: 0.6

3

Normal saline

PE: –

Null: –

NE: Vasopressors duration administration, ICU LOS, Δ SOFA, mortality

Hwang (2020) [27]

Korea

RCT

Septic– shock

70

58/53

38

AA

C: Up to 6

B1: 0.4

2

Normal saline

PE: –

Null: Δ SOFA, mortality, vasopressor–free days, vasopressor dosage, ventilatorfree days

NE: –

Karimpour (2019) [28]

Iran

RCT

Septic- shock

61

50/50

43

C: Up to 6

B1: 0.2

4

Normal saline

PE: vasopressors duration

Null: Δ SOFA, mortality, ICU LOS, ventilator-free days

NE: –

Lomivorotov (2019) [13]

Australia

RCT

Surgery (CABG)

64

20/19

59

B1: 0.4

3

Placebo

PE: –

Null: vasopressor dose, length of mechanical ventilation, Δ SOFA, LOS, ICU LOS

NE: –

Luger (2015) [33]

Australia

RCT

Cardiac- Surgery

58

15/15

77

B1: 0.3

Before surgery

Normal saline

PE: concentrations of blood thiamine

Null: hospital LOS, 30 days- mortality, ICU LOS

NE: –

Moskowitz (2020) [29]

USA

RCT

Septic- shock

68.4

99/101

55

C: 6

B1: 0.4

Hydrocortisone: 0.2

4

Normal saline

PE: –

Null: Δ SOFA, mortality, ventilator-free days

NF: –

Moslemi (2020) [10]

Iran

RCT

Surgery

54

48/48

59

B1: 0.2

3

Normal saline

PE: –

Null: length of mechanical ventilation, vasopressor use, Δ SOFA

NE: –

Nasution (2020) [34]

Indonesia

RCT

Sepsis

46

12/12

B1: 0.4

3

Normal saline

PE: –

Null: Δ SOFA

NE: –

Pradita-ukrit (2020) [32]

Thailand

RCT

Cardiac-arrest

64.3

17/20

70

B1: 0.3

7

Normal saline

PE: –

Null: mortality, ICU LOS

NE: –

Wani (2020) [30]

India

RCT

Sepsis

67.5

50/50

59

C: 6

B1: 0.4

Hydrocortisone: 0.2

4

4

7

Normal saline

PE: vasopressor duration

Null: mortality, length of mechanical ventilation, vasopressor duration, LOS, Δ SOFA

NE: –

  1. Outcomes: NE Negative Effect, PE Positive Effect, Null None Effect, SOFA Sepsis-Related Organic Failure Assessment, LOS length of stay, AA ascorbic acid, CABG Coronary artery bypass, ARDS Acute respiratory distress syndrome