. Author manuscript; available in PMC: 2011 Dec 11.

Published in final edited form as: Biol Psychiatry. 2010 Jan 15;67(10):965–973. doi: 10.1016/j.biopsych.2009.11.026

Table 1.

Minimal Difference in Physical Growth, Neonatal Maturation, and Adrenal Activity in Control and Influenza Virus-Exposed Infants

Measure	Control Mean ± SE	Influenza Mean ± SE	p
Gestation Length (days)	171 ± 1	169 ±2	.48
Birth Weight (g)	496 ± 37	529 ± 16	.46
NAS (0–2)
Temperament	1.06 ± .08	1.01 ± .06	.36
Orient	1.26 ± .15	1.11 ± .11	.27^a
Motor activity	1.03 ± .13	.93 ± .10	.28
Motor activity	1.12 ± .12	.98 ± .09	.45
Infant Independence (% of time)
Month 1	4 ± 3	8 ± 2	.31
Month 2	16 ± 5	26 ± 4	.14
Month 3	25 ± 5	41 ± 4	.03^a
Cortisol Levels (μg/dL)
Basal	35 ± 5	29 ± 2	.14
Stress	78 ± 3	69 ± 5	.28
Acclimation am	57 ± 5	58 ± 4	.73
Acclimation pm	46 ± 3	43 ± 2	.25
DST am	38 ± 8	35 ± 6	.76
DST pm	29 ± 5	23 ± 4	.51

Analysis of variance of the neurobehavioral assessment scale (NAS) showed a condition × gender interaction (p = .003) on the Orientation subscale. Follow-up tests showed that virus-exposed males scored lower than control males on this measure (p = .012). Control n = 7, Influenza n = 12.

DST, Dexamethasone Suppression Test.

Significant p values below .05.