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Table 3 Multivariate analysis of variance (MANCOVA) of forced maximal flow (V’maxFRC), respiratory compliance (Crs), and airway resistance (Raw) with patient characteristics as covariates

From: Lung function in very low birth weight infants after pharmacological and surgical treatment of patent ductus arteriosus - a retrospective analysis

 

V’maxFRC

Respiratory compliance

Airway resistance

Source

F ratio

P value

F ratio

P value

F ratio

P value

Covariates

 Gestational age

<0.01

0.945

0.19

0.667

0.02

0.885

 Birth weight

4.99

0.028

2.98

0.087

<0.01

0.991

 Postconceptional age

4.22

0.043

7.69

0.007

0.37

0.544

 Body weight

2.44

0.122

6.48

0.012

1.11

0.295

 Duration hsPDA

0.26

0.609

0.05

0.821

0.65

0.423

 Duration mechanical ventilation

0.43

0.513

2.29

0.133

0.08

0.773

Main effect

 PDA ligation

2.73

0.102

1.68

0.198

22.00

<0.001

  1. F ratios are based on the residual mean square error and p-values indicate the statistical significance of each factor