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Table 1 General characteristics and subjective and objective variables N = 125

From: Tidal volume according to the 4-point sealing forces of a bag-valve-mask: an adult respiratory arrest simulator-based prospective, descriptive study

Category

  

N

(%)

Mean (±SD)

General characteristics

Gender

male

58

(46.4)

 
 

female

67

(53.6)

 
 

School year

Freshman

31

(24.8)

 
  

Sophomore

30

(24.0)

 
  

Junior

54

(43.2)

 
  

Senior

10

(8.0)

 
 

Academic grades

4.0≤

20

(16.0)

 
  

3.0–3.99

84

(67.2)

 
  

2.99≥

21

(16.8)

 
 

Clinical practice satisfaction (1–5)

   

3.76 (±0.78)

 

Major satisfaction (1–5)

   

4.07 (±0.76)

 

Experience of BVM ventilation

No

69

(55.2)

 

Yes

56

(44.8)

 

Acquired certificate

No

0

59

(47.2)

 

Yes

1

52

(41.6)

 
 

2

9

(7.2)

 
 

3

5

(4.0)

 
 

BMI (kg/m2)

   

22.89 (±2.77)

Subjective variables

Knowledge (0–10)

   

6.29 (±1.69)

Performance confidence (10–50)

   

36.89 (±6.80)

Objective variables

C length (cm)

   

7.54 (±1.85)

 

Peak pressure (cmH2O)

   

11.62 (±5.40)

 

ln (apex sealing force) (N)

   

0.03 (±0.03)

Bottom sealing force (N)

   

0.69 (±0.80)

Left sealing force (N)

   

0.53 (±0.46)

Right sealing force (N)

   

0.31 (±0.41)

Tidal volume (mL)

   

321.66 (±135.18)

  1. ln (apex sealing force) = ln (apex sealing force + 1)8