Table 3.

Differences in whole and subnuclei amygdala volumes between low-risk preterm and full-term young adults

	Low-risk preterm n = 33 mean volume mm3 ± SD	Full-term n = 29 mean volume mm3 ± SD	F-snedecor statistic (p)		${\eta }_p^2$
Whole amygdala volumes (adjusted for age, eTIV, and self-SES)
Left amygdala	1714.71 ± 204.67	1722.45 ± 197.34	0.03 (0.86)		0.00
Right amygdala	1818.53 ± 217.36	1837.92 ± 222.57	0.16 (0.69)		0.00
Left amygdala segmentation (adjusted for age, left amygdala volume, and self-SES)
Lateral nucleus	621.61 ± 72.34	630.50 ± 77.01	1.68 (0.20)		0.03
Basal nucleus	440.44 ± 55.01	438.79 ± 49.69	0.28 (0.60)		0.01
Accessory basal nucleus	264.43 ± 35.39	261.61 ± 33.89	0.69 (0.41)		0.01
Anterior amygdaloid area	53.81 ± 7.91	55.27 ± 7.83	1.21 (0.28)		0.02
Central nucleus	45.05 ± 7.30	43.28 ± 7.84	1.61 (0.21)		0.03
Medial nucleus	26.56 ± 5.95	25.54 ± 6.11	0.55 (0.46)		0.01
Cortical nucleus	27.19 ± 4.17	26.07 ± 3.98	2.32 (0.13)		0.04
Corticoamygdaloid transition	187.59 ± 24.20	186.19 ± 24.20	0.35 (0.56)		0.01
Paralaminar nucleus	51.66 ± 6.29	51.08 ± 6.16	0.40 (0.53)		0.01
Right amygdala segmentation (adjusted for age, right amygdala volume, and self-SES)
Lateral nucleus	668.92 ± 82.36	669.13 ± 85.81	0.00 (0.98)		0.00
Basal nucleus	466.98 ± 58.02	469.45 ± 57.26	0.66 (0.42)		0.01
Accessory basal nucleus	278.64 ± 35.20	279.55 ± 37.33	0.07 (0.79)		0.00
Anterior amygdaloid area	58.90 ± 8.96	59.81 ± 8.81	0.40 (0.53)		0.01
Central nucleus	48.74 ± 8.35	46.84 ± 6.75	1.50 (0.23)		0.03
Medial nucleus	28.04 ± 7.06	26.11 ± 5.03	1.66 (0.20)		0.03
Cortical nucleus	28.74 ± 5.01	27.73 ± 4.57	1.42 (0.24)		0.02
Corticoamygdaloid transition	194.99 ± 22.86	195.55 ± 25.55	0.06 (0.81)		0.00
Paralaminar nucleus	53.66 ± 7.44	53.43 ± 7.06	0.06 (0.81)		0.00

Note: mm³ cubic millimeter, SD standard deviation, eTIV total intracranial volume, SES socioeconomic status, ${\eta }_p^2$ partial eta squared