Table 1.

Age and sex distribution in discovery and validation datasets

GA (week)	Discovery dataset		Validation dataset
	Male (N)	Female (N)	Male (N)	Female (N)
22	5	4	0	0
23	8	4	1	0
24	10	7	0	0
25	11	5	0	0
26	11	5	0	0
27	13	8	3	0
28	23	9	1	2
29	23	20	0	1
30	24	16	1	1
31	31	24	0	2
32	53	46	4	7
33	37	49	4	4
34	41	33	2	7
35	21	13	0	2
36	13	11	1	1
37	11	10	1	1
38	13	8	2	1
39	7	6	0	0
40	2	2	0	0
Total	357	280	20	29