Table 1.

Occipitofrontal Head Circumference Measurements for Affected Members from Family MR-2019

Pedigree ID	Status	Sex	Age	OFC (cm)	OFC SD.
V:3	Affected	M	9	49	−2.5
V:4	Affected	F	11	50.5	5th centile
V:7	Affected	F	14	54	normal
V:8	Affected	F	6	49	5th centile
V:9	Affected	F	3	46.5	−2
lV:9	Affected	F	34	not available	not available
lV:10	Affected	F	30	52	−2

Approximate percentile is given, or if below fifth centile, approximate number of SDs below the mean is given, according to normative values provided by Nellhaus⁹ and Roche et al.²⁰ Ages given are estimated from birth year. M, male; F, female.