Age at notification (days) in 198 infants requiring second sampling (standard ≤26 days)
| Time period | Total referred | Retested (n (%)) | Age at notification | Notified ≤26 days (n (%)) | Notified >26 days (n (%)) | Not known | |
| Median (range) | Mean±SD (Q1–3) | ||||||
| 1980–1984 | 95 | 9 (9.4) | 14.5 (11–41) | 19.3±10.2 (12.5–24.5) | 7 (77.7) | 1 (11.2) | 1 |
| 1985–1989 | 147 | 28 (19) | 20.5 (7–33) | 19.1±7.8 (11–24.5) | 23 (82.1) | 5 (17.8) | 0 |
| 1990–1994 | 119 | 14 (11.7) | 22 (8–31) | 20.4±6.7 (18−24) | 12 (85.7) | 2 (14.2) | 0 |
| 1995–1999 | 112 | 24 (21.4) | 19 (8–35) | 19±7.2 (13−22) | 20 (83.4) | 3 (12.5) | 1 |
| 2000–2004 | 150 | 37 (24.7) | 21 (7–50) | 21.4±9.3 (15.5–25) | 28 (75.6) | 8 (21.6) | 1 |
| 2005–2009 | 156 | 41 (26.2) | 20 (5–56) | 21±9.1 (16–24) | 35 (85.3) | 6 (14.6) | 0 |
| 2010–2014 | 140 | 45 (31.9) | 19 (9–39) | 19.6±5.6 (16–21) | 41 (91.2) | 4 (8.8) | 0 |
This table does not show data on 31 infants tested three times during the study period.
Q1, lower quartile; Q3, upper quartile.