Table 4:

Associations between vaccine responses and 6-week vaccination induced cortisol responsiveness in infants

	Regression model		∆Cortisol (µg/dL)
	R2	p	β (SE)	p
CD4+ T-cell SI at 6 w
PPD	0.119	0.23	−0.286 (0.958)	0.77
SEB	0.0947	0.46	−1.22 (1.18)	0.30
CD4+ T-cell SI at 15 w
PPD	0.0718	0.48	0.428 (1.08)	0.69
SEB	0.0676	0.68	−0.517 (1.01)	0.61
TT	0.0786	0.36	40.5 (58.2)	0.49
HBV	0.141	0.024	34.1(55.7)	0.54
ALS antibody at 15 w
TT IgG, mIU/mL	0.0592	0.564	−1.26 (1.33)	0.35
Polio IgG, mIU/mL	0.0933	0.14	1.26e-06 (6.75e-07)	0.065
HBV IgG, mIU/mL	0.157	0.13	−0.0197 (0.0245)	0.43
PPD skin test at 15 w
Area (cm2)	0.0659	0.37	−110.4 (55.8)	0.049
Positive (n=187),   Negative = 0 (n=37)	--		−5.31 (2.51)	0.034

Regression models determined association between vaccine response and cortisol response (∆Cortisol) controlling the factors: infant’s behaviour during saliva collection, pre-vaccine cortisol, saliva collection time, sex, mode of delivery, birthweight, length for age Z-score, weight for length Z-score, and breastfeeding status.