Table 2.
Morbidities for infants divided by Era (limited to infants who survived)
| Era 1998–1999 (N=16) |
Era 2000–2002 (N=22) |
Era 3 2003–2004 (N=21) |
Era 4 2005–2013 (N=97) |
P Value |
|
|---|---|---|---|---|---|
| Unadjusted Descriptive Statistics, median (IQR*) | |||||
| Ventilator (days) | 9 (4, 15) | 9 (5, 14) | 15 (8, 24) | 9 (6, 23) | |
| Oxygen (days) | 20 (10, 28) | 16 (10, 32) | 39 (26, 44) | 22 (14, 58) | |
| Discharge age (days) | 24 (15, 28) | 26 (17, 39) | 40 (26, 54) | 37 (22, 68) | |
| Multivariable Gamma Regression Adjusted Mean (95% confidence interval)** | |||||
| Ventilator (days) | 14 (8 – 20) | 14 (9 – 19) | 19 (12 – 26) | 15 (12 – 18) | 0.55 |
| Oxygen (days) | 28 (14–41) | 33 (19–47) | 43 (24–61) | 39 (30–47) | 0.49 |
| Discharge age (days) | 32 (19–44) | 42 (27–56) | 48 (32–64) | 50 (42–57) | 0.18 |
*
IQR = interquartile range (25th and 75th percentiles)
**
Adjusting for gestational age, Caucasian race, primary repair, and WHSR score positive, P value is from a regression post-test comparison of the equality of the four adjusted means. Each row represents a separate model.