Table 2. Characteristics of the exposed individuals*.
| Total number of patients | 523 |
|---|---|
| Male gender, n (%) | 321 (61.4) |
| Gestational age in weeks, n** (%) | |
| • <28 | 19 (3.7) |
| • 28–32 | 29 (5.7) |
| • 33–37 | 160 (31.2) |
| • >37 | 305 (59.4) |
| Median gestational age in weeks (range) | 38 (24–44) |
| Median age in days at surgery (range) | 7 (0–365) |
| Median gestational weeks at surgery (range) | 40.1 (25.6–90.1) |
| Median number of surgeries (range) | 1 (1–13) |
| Number of individuals with one surgery (%)*** | 296 (56.6) |
| Number of individuals with two surgeries (%)*** | 139 (26.6) |
| Number of individuals with three or more surgeries (%)*** | 88 (16.8) |
*The cohort of exposed individuals before the exclusion of 38 individuals with chromosomal aberrations.
**Missing data in 10 individuals.
***The total number of surgeries during median follow-up 14.7 years (0.0–36.0).