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Table 1 Comparison between group A (U.S) and group B (colorimetric CO2 detector) according to baseline characteristics

From: Evaluation of real-time tracheal ultrasound versus colorimetric capnography as a point of care tool for confirmation of endotracheal intubation: a randomized controlled study

Baseline characteristics Group A (U.S) [n = 35] Group B (colorimetric CO2 detector) [n = 35] Test of significant p value
Age (years)
 Range 21–70 22–70 t = 0.411 0.206
 Mean ± SD 49.14 ± 13.69 50.86 ± 11.51
Sex
 Male 22 (62.9%) 20 (57.1%) X2 = 0.221 0.605
 Female 13 (37.1%) 15 (42.9%)
BMI [wt/(ht)^2]
 Range 24.0-31.6 26.5–33.9 t = 1.03 0.124
 Mean ± SD 27.56 ± 2.31 30.29 ± 2.46
ASA
 I/II 30 (85.7%) 28 (80.0%) X2 = 0.114 0.691
 III/IV 5 (14.3%) 7 (20.0%)
Unexpected difficult intubation 3 (8.6%) 5 (14.3%) X2 = 0.631 0.190
No. of attempts of intubation
 Range 1–3 1–3 t = 1.15 0.187
 Mean ± SD 1.31 ± 0.58 1.43 ± 0.61
  1. t independent sample t test, X2 chi-square test; p value > 0.05 NS