Age (days) at initial testing, notification and start of treatment in 623 of 624 infants with true congenital hypothyroidism referred by Scottish Screening laboratory 1980–2014
| Time period | Age at initial sampling | Age at notification | Age at start of treatment | |||
| Median (range) | Mean±SEM (Q1-3) | Median (range) | Mean±SEM (Q1-3) | Median (range) | Mean±SEM (Q1-3) | |
| 1980–1984 n=79 | 7 (4–56) | 7.8+/−5.9 (6–8) | 13 (5–59) | 14.4+/−6.5 (11–17) | 16 (8–313) | 21+/−35.3 (13–19) |
| 1985–1989 n=91 | 6 (4–35) | 6.7+/−3.4 (5–7) | 12 (8–43) | 12.9+/−5.6 (10–14) | 13 (8–212) | 17.4+/−23 (11–16) |
| 1990–1994 n=85 | 6 (4–49) | 7.2+/−5 (5–7.5) | 11 (5–54) | 13.3+/−9 (10–13) | 12 (2–195) | 16.5+/−22.7 (10–15) |
| 1995–1999 n=85 | 6 (1–13) | 5.9+/−1.6 (5–7) | 10 (5–38) | 11.2+/−5.6 (8–12) | 11 (1–177) | 16.8+/−27 (8–13) |
| 2000–2004 n=90 | 6 (3–17) | 6.1+/−1.6 (5–7) | 11 (3–31) | 12+/−4.2 (10–13) | 12 (3–200) | 17.4+/-27.4 (10–14) |
| 2005–2009 n=102 | 5 (1–12) | 5.2+/−1.2 (5–6) | 11 (5–56) | 12.5+/−7.1 (9–13) | 11.5 (1–94) | 13.4+/−10 (10–14) |
| 2010–2014 n=91 | 5 (4–15) | 5+/−1.2 (4–5) | 10 (7–31) | 11.7+/−4.6 (9–12) | 10.5 (1–48) | 11.9+/−6 (9–13) |
Q1, lower quartile; Q3, upper quartile.