Table 2.

Multivariable regression model coefficients for predictors of the intermediary outcome variablesa

	Intermediary outcome variable
Predictor/intermediary variable	Plasma AGP	Salivary cortisol 28 weeks	Weekly weight gain	Placental weight	Duration of pregnancy
Maternal ageb (year)	−0.022a	−0.055	0.048	−0.004	0.013
Maternal primiparityb	0.374***	0.016	−0.145	−0.122	−0.026
Maternal heightb (cm)	−0.016	0.007	0.106***	0.103**	0.014
Maternal BMIb (kg/m2)	−0.028	−0.010	−0.141***	0.099**	−0.056*
Maternal Hbb (g/L)	−0.036	−0.001	0.061*	−0.069*	0.104***
Maternal HIV infectionb	0.431***	0.027	−0.235**	−0.205*	0.024
Maternal malaria infectionb	0.476***	−0.063	−0.118a	0.085	−0.134*
Maternal periapical infectionsc	0.013	0.000	−0.148*	0.091	−0.216*
Maternal urinary tract infectionc	0.072	0.293	−0.089	0.138	−0.440*
Maternal trichomoniasisc	0.172a	−0.042	−0.096	−0.058	−0.153
Placental malaria infectionc	0.123a	0.037	−0.143*	0.068	0.060
Severe chorioamnionitisc	−0.260**	0.001	0.030	−0.017	−0.349*
Maternal plasma AGP concentrationb (g/L)	N/A	0.030	0.093**	−0.054	−0.019
Maternal salivary cortisol concentrationd (nmol/L)	0.027	N/A	−0.057a	−0.006	−0.001
Maternal weekly weight gaine (g/week)	0.085**	−0.057a	N/A	0.078*	0.024
Placental weightc (g)	−0.050	−0.006	0.079*	N/A	0.280***
Duration of pregnancye (week)	−0.019	−0.001	0.026	0.299***	N/A
Adjusted coefficient of determinationf (R 2; %)	15.4	5.5	7.4	12.4	15.1

Note. Hb = haemoglobin; AGP = α‐1‐acid glycoprotein; BMI = body mass index.

^aValues are β coefficients unless otherwise specified.

^bMeasured at study enrolment.

^cmeasured at delivery or soon thereafter.

^dmeasured at 28 gestation weeks.

^emeasured throughout the pregnancy.

^fproportion of the dependent variable explained by the independent variables in the model, adjusted for the number of independent variables in the model.

^* .01 ≤ p < .05.

^** .001 ≤ p < .010.

^*** p < .001.

^# .050 ≤ p < .100.