Control Group (I) (n = 100)

Study Group (II) (n = 89)

t Value

p Value

SPO₂

96.59 ± 1.72

95.96 ± 2.14

2.227

0.027*

Exhaled CO

0.28 ± 0.04

0.33 ± 0.15

−2.828

0.005*