Association of circulating angiotensin converting enzyme activity with respiratory muscle function in infants

Respiratory Research

Table 4 Results of stepwise regression analysis of factors related to PTImus measurements

	Partial Correlation Coefficient	t Value	Significance
Dependent variable: PTImus
cACE activity	-0.339	-3.675	0.00037
ACE genotypes	0.298	3.233	0.00163
Weight at measurement		1.944	0.055
Postmenstrual age		0.792	0.430
Gender		1.364	0.169
Duration of mechanical ventilation		0.490	0.625

ISSN: 1465-993X