Table 3.

Birth order, age at diagnosis, number of days consuming milk prior to diagnosis of galactosaemia, IQ standard scores (SS), receptive language SS, and expressive language SS for the five multiplex families

Family	Child’s birth order	Age at diagnosis in days	Number of days on milk	IQ (SS)	Receptive language (SS)	Expressive language (SS)
1	1	7	4	80	71	77
1	2	7	0	104	110	89
2	1	10	10	87	72	78
2	2	0	0	97	113	78
3	1	9	4	40	40	40
3	2	5	0	96	83	103
4	1	17	17	65	65	70
4	2a	0	0	84	79	75
4	2a	0	0	82	64	68
5	1	4	4	103	84	108
5	2	4	4	109	94	98

^aTwins