Table 3.

Factors associated with the level of sHLA - G in cord blood at birth using linear multivariate regression

Covariates		Estimation	95% CI	p-value
HLA-G in maternal blood	No (n = 32)
	Yes (n = 120)	1.23	0.72; 1.90	<10-3
Low birth weight	No (n = 140)
	Yes (n = 12)	0.73	0.04; 1.83	0.040

Estimation represents regression coefficients which can be positive or negative. Regression coefficients measure the increase (positive value) or decrease (negative value) of the dependent variable (level of sHLA-G in cord blood at birth) due to the presence of independent ones. Covariates included in linear multivariate regression were sHLA-G quantification in maternal blood, low birth weight and placental infection. Information concerning the three covariates was available for 152 infants. Covariates with significant p values were presented in the Table  3.