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Table 3 Reliability and Comparison of Upper Airway CT Measures between Groups

From: A clinical prediction rule to identify difficult intubation in children with Robin sequence requiring mandibular distraction osteogenesis based on craniofacial CT measures

Variable

Normal intubation group(n = 30)

Difficult intubation group(n = 39)

ρ Value

P Value

D1 (mean (sd))

40.86 (3.15)

39.84 (2.80)

0.997

0.192

D2 (mean (sd))

6.92 (3.11)

6.28 (2.09)

0.991

0.357

D3 (mean (sd))

25.02 (3.96)

23.44 (4.31)

0.998

0.164

D4 (mean (sd))

15.52 (2.09)

15.63 (3.17)

0.993

0.877

D5 (mean (sd))

3.79 (1.44)

3.69 (1.33)

0.994

0.772

D6 (mean (sd))

2.78 (1.65)

2.00 (1.19)

0.997

0.045*

D7 (mean (sd))

4.87 (2.29)

5.27 (2.18)

0.999

0.511

D8 (mean (sd))

5.66 (1.77)

5.63 (0.99)

0.994

0.942

D9. Left. (mean (sd))

16.54 (2.55)

15.32 (2.49)

0.998

0.068

D9.Right. (mean (sd))

16.41 (2.50)

15.19 (2.67)

0.998

0.078

D10.Left. (mean (sd))

40.32 (3.83)

40.04 (3.05)

0.999

0.762

D10.Right. (mean (sd))

40.54 (4.01)

40.08 (2.95)

0.997

0.613

D11.Left. (mean (sd))

56.91 (5.58)

55.41 (3.77)

0.997

0.227

D11.Right. (mean (sd))

54.96 (11.14)

53.87 (9.58)

0.993

0.686

Area (mean (sd))

40.64 (19.34)

25.61 (11.72)

0.995

0.001*

A1 (mean (sd))

144.29 (14.25)

142.53 (19.61)

0.999

0.705

A2 (mean (sd))

4.82 (2.26)

4.63 (2.35)

0.998

0.758

A3 (mean (sd))

116.71 (11.20)

118.45 (14.62)

0.999

0.622

A4 (mean (sd))

100.05 (12.54)

101.60 (7.18)

0.998

0.554

A5.Left. (mean (sd))

135.46 (4.89)

131.45 (8.12)

0.997

0.012*

A5.Right. (mean (sd))

135.74 (6.18)

130.73 (8.00)

0.998

0.01*

A6 (mean (sd))

87.22 (7.78)

88.08 (8.14)

0.999

0.675

Oral volume (mean (sd))

2000.66 (1389.55)

1948.27 (1192.55)

0.992

0.88

Palatine pharyngeal volume (mean (sd))

652.45 (410.90)

538.90 (267.63)

0.993

0.212

Glossopharyngeal volume (mean (sd))

400.81 (226.37)

321.45 (274.75)

0.992

0.239

  1. Spearman’s rank correlation coefficient was used to evaluate the Inter-observer correlation
  2. D Distance, A Angle Area: Airway section area at the tip of epiglottis
  3. *Statistically significant at p < 0.05
  4. P<0.05 means a significant difference between the two groups
  5. ρ>0.9 shows that the measurement results are credible