Table 3 Correlation analysis of tidal volume according to general characteristics.

From: Effects of weights applied to the apex of a bag-valve-mask and pinch strength on tidal volume: a prospective simulation study

Variables

Mean tidal volume (mL)

0 g

100 g

200 g

300 g

r (p)

r (p)

r (p)

r (p)

Sex1)

− 0.08 (0.482)

− 0.08 (0.505)

− 0.06 (0.603)

− 0.22 (0.061)

Grade2)

− 0.08 (0.493)

0.03 (0.773)

− 0.15 (0.212)

− 0.04 (0.722)

Height

0.25 (0.031)

0.15 (0.195)

0.18 (0.134)

0.32 (0.005)

Weight

0.18 (0.138)

0.20 (0.086)

0.12 (0.322)

0.14 (0.232)

Pinch strength

 Tip

0.05 (0.683)

0.22 (0.066)

0.18 (0.130)

0.13 (0.294)

 Key

0.14 (0.225)

0.05 (0.681)

0.03 (0.816)

0.11 (0.370)

 Tripod

0.36 (0.002)

0.18 (0.125)

0.25 (0.032)

0.35 (0.003)

Handgrip strength

0.17 (0.156)

0.15 (0.212)

0.16 (0.183)

0.28 (0.016)

  1. Date are expressed as Pearson’s correlation coefficient.
  2. Significant values are in [underline].
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