Table 1.
Patient demographics
| Patient characteristics | Total (n = 200) | S/SP design (n = 19) | J/B design (n = 181) | Missing | ||||
|---|---|---|---|---|---|---|---|---|
| n % | n % | n % | p-value | n % | ||||
| Sex | ||||||||
| Male | 102 | 51% | 12 | 63% | 90 | 50% | 0.3 | |
| Age at time of IPAAa surgery, median (IQR) | 34 (27.0–42.8) | 32.0(23.0–38.0) | 34.0 (27.0–43.0) | 0.4 | ||||
| Year of IPAAa surgery, median (IQR) | 1994 (1991–1997) | 1987 (1986–1989) | 1994 (1991–1997) | < 0.01 | ||||
| Pre-IPAA diagnosis | 0.02 | |||||||
| UC | 144 | 72% | 8 | 42% | 144 | 80% | ||
| Polyposis/malignancy | 35 | 18% | 8 | 42% | 27 | 15% | ||
| IBD-U | 10 | 5% | 3 | 16% | 7 | 4% | ||
| Other | 3 | 2% | 0 | 0% | 3 | 2% | ||
| Staged procedure | < 0.01 | |||||||
| One- stage | 76 | 39% | 1 | 6% | 75 | 43% | ||
| Two- stage | 34 | 18% | 8 | 47% | 26 | 15% | 8 4% | |
| Modified two-stage | 60 | 31% | 3 | 18% | 57 | 33% | ||
| Three-stage | 22 | 11% | 4 | 24% | 18 | 10% | ||
| Postoperative follow-up, median (IQR), years | 27.0 (23.3–29.0) | 33.0 (31.0–34.0) | 26.0 (23.0–29.0) | < 0.01 | ||||
Bold values were values with a significance <0.05
aIPAA Ileal pouch-anal anastomosis
bIQR interquartile range
cUC Ulcerative colitis
dIBD-U IBD-undetermined