Table 1.
Infant characteristics and sweat test timing information
| Intervention Group (N = 301) |
Non-Intervention Group (N = 355) |
|||
|---|---|---|---|---|
| n | (%) | n | (%) | |
| Year of birth | ||||
| 2005 | 0 | (0) | 19 | (5.4) |
| 2006 | 0 | (0) | 176 | (49.6) |
| 2007 | 11 | (3.7) | 160 | (45.1) |
| 2008 | 154 | (51.2) | 0 | (0) |
| 2009 | 136 | (45.2) | 0 | (0) |
| Sex | ||||
| Female | 166 | (55.1) | 168 | (47.3) |
| Male | 134 | (44.5) | 183 | (51.5) |
| Not reported | 1 | (0.3) | 4 | (1.1) |
| Final Diagnosis | ||||
| Carrier, CF | 260 | (86.4) | 307 | (86.5) |
| Affected, CF | 11 | (3.7) | 15 | (4.2) |
| Inconclusive | 15 | (5.0) | 7 | (2.0) |
| IRT ^ | ||||
| Average ng/mL (SD) | 78.2 | (26.6) | 82.6 | (40.1) |
| Got a sweat test | ||||
| n (%) | 286 | (95.0) | 329 | (92.7) |
| Age (days) at sweat test | ||||
| average (SD; 95% CI) | 31.4 | (29.6; 28.0-34.8) | 34.9 | (36.9; 30.9-38.9) |
| median (range) | 23 | (8-294) | 22 | (8-334) |
| Got a timely sweat test (<8 weeks)◇ | ||||
| n (%) | 257 | (85.4)** | 275 | (77.5) |
^
Infant’s immunoreactive trypsinogen (IRT) on newborn screen report in ng/ML; (SD) is standard deviation
◇
Compared with infants who got a sweat test at an age ≥8 weeks and infants who did not get a sweat test.
**
Statistically significant difference (p=0.010, χ2)