Table 1.

Demographic information, cry utterances, and structural brain volumes.

	iCL/P				Unaffected
	iCL/P1	iCL/P2	iCL/P3	iCL/P4	HC1	HC2	HC3	HC4
Demographics
Gestational age at birth	36.57	40.71	40.00	38.57	40.71	38.00	40.00	38.00
Age at participation	11.57	7.43	7.29	8.71	7.86	8.14	7.86	9.71
Height	48.5	58.42	58.42	55.88	58.50		60.96	56
Weight	5.20	4.74	4.91	4.68	5.65	4.38	5.20	4.74
Head circumference	36.00	40.00		38.10	39.50		38.74	39.00
Parental SES	2	2	3	3	3	2	2	2
Age of mother at birth	32	37	31	35	24	32	29	32
Age of father at birth	35	35	34	36	27	32	27	28
Cry utterances
Total utterances	19	11	21	14	26	21	28	36
Mean (SD) length of utterances	1.54 (0.8)	2.72 (1.0)	1.54 (0.5)	2.64 (1.6)	1.49 (0.5)	1.58 (0.6)	0.96 (0.7)	1.36 (0.5)
Utterances with melody breaking	14	11	10	4	4	3	2	5
Percentage of segmented utterances	73.7	100	47.6	28.6	15.4	14.3	7.1	13.9
Structural brain volumes
Total brain tissue			491,634	520,593	544,365	494,119	516,520	530,059
Total cerebral tissue			457,121	476,493	498,449	454,530	477,944	483,220
Surface gray matter			178,783	148,105	173,721	211,648	207,280	221,903
Myelinated white matter			20,295	23,188	25,994	32,712	33,219	27,578
Unmyelinated white matter			258,043	305,200	298,734	210,170	237,445	233,739
Total cerebellar tissue			34,513	44,100	45,916	39,589	38,576	46,839
Gray matter			30,794	40,282	39,336	35,420	34,007	43,306
White matter			3719	3818	6580	4169	4569	3533

Notes: Given that only one participant was female, sex is not reported to protect confidentiality. Gestational age and age at participation in weeks. Height and head circumference in cm. Weight in kg. Age of parents in years. Length of utterances in seconds. Brain volumes are in mm³.

SES socioeconomic status.