Table 2 Correlation between various factors and patient outcome.

From: Initial radiographic tracheal ratio in predicting clinical outcomes in croup in children

Variables

Outpatient

P value

No (n = 54)

Yes (n = 138)

Age < 1

15 (27.8)

23 (16.7)

0.185

Age 1–6

36 (66.7)

108 (78.3)

 

Age > 6

3 (5.6)

7 (5.1)

 

Age(years)

1.84 ± 1.86

2.14 ± 1.71

0.275

Steeple sign

5 (9.3)

8 (5.8)

0.523

FW (cm)Ψ

1.67 ± 0.89

2.17 ± 1.14

0.002

FR

0.25 ± 0.16

3.98 ± 1.43

0.058

LW (cm)Ψ

3.30 ± 1.32

3.98 ± 1.43

0.003

LRΨ

0.55 ± 0.19

0.62 ± 0.16

0.015

LR > 0.6Ψ

36 (66.7)

63 (45.7)

0.009

FR*LR (or LR*LR, if FR = 0)Ψ

0.16 ± 0.13

0.20 ± 0.12

0.041

Fever

47 (87.0)

107 (77.5)

0.137

Croup hx (+)Ψ

4 (7.4)

30 (21.7)

0.019

  1. P-value by Chi-square test or Fisher’s exact test when appropriate.
  2. P-value of mean ± SD by Student’s t-test.
  3. FW: frontal narrowest width; LW: lateral narrowest width.
  4. FR: Frontal Ratio, LR: Lateral Ratio.
  5. LOS: length of hospital-stay.
  6. Ψ: p-value < 0.05.
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