Table 2.

Nominal age range at collection of 206 urine samples analyzed for goitrogenic anions and iodide.^a

Nominal age	Range (days)	Boy	Girl	Total
Newborn	< 2	5	4	9
1 week	2–9	2	4	6
2 weeks	10–16	3	2	5
3 weeks	17–23	4	3	7
4 weeks	24–30	1	2	3
5 weeks	31–37	3	3	6
6 weeks	38–44	3	2	5
7 weeks	45–51	4	3	7
8 weeks	52–58	4	2	6
9 weeks	59–65	4	3	7
10 weeks	66–72	5	4	9
11 weeks	73–79	3	2	5
12 weeks	80–86	2	6	8
13 weeks	87–93	3	4	7
14 weeks	94–100	4	3	7
15 weeks	101–107	5	5	10
16 weeks	108–114	3	1	4
17 weeks	115–121	3	4	7
18 weeks	122–128	5	3	8
19 weeks	129–135	5	3	8
20 weeks	136–142	3	3	6
21 weeks	143–150	2	4	6
22 weeks	151–156	3	3	6
23 weeks	157–163	4	3	7
6 months	164–181	4	3	7
7 months	182–209	3	3	6
8 months	210–238	4	4	8
9 months	239–265	4	3	7
10 months	266–293	4	4	8
11 months	294–321	3	3	6
12 months	322–378	4	1	5
Total		109	97	206

^aNinety-two unique infants participating at up to four nominal ages.