Table 7.

Extremely premature (<28 weeks), very premature (28 ≤ x < 32 weeks), and moderate-to-late prematurity (32 ≤ x < 37 weeks) as predictive factors for 30-day postoperative complications, readmission, and reoperations in premature patients who underwent PSF for AIS. Bold values are statistically significant (p < 0.05).

Multivariate Regression Analysis	OR	95% CI	p-Value
Extremely Premature
Total Complications	0.4	0.1–1.4	0.144
Readmissions	4.3	0.7–27.6	0.126
Reoperation	0.5	0.1–2.3	0.399
Overall Infection	1.9	0.5–8.0	0.377
Deep Space Infections	4.0	0.9–17.2	0.062
Superficial Infection or Dehiscence	0.7	0.2–19.9	0.757
Very Premature
Total Complications	1.6	0.7–3.3	0.250
Readmissions	3.1	0.5–20.8	0.249
Reoperation	1.5	0.6–3.8	0.351
Overall Infection	4.4	1.9–10.5	<0.001
Deep Space Infections	3.0	0.7–12.7	0.143
Superficial Infection or Dehiscence	4.4	1.5–12.7	0.006
Urinary Tract Infection	9.8	2.8–34.3	<0.001
Moderate-to-Late Prematurity
Total Complications	1.2	0.6–2.2	0.613
Readmissions	1.7	0.5–5.9	0.381
Reoperation	1.6	0.8–3.0	0.173
Overall Infection	3.3	1.7–6.3	<0.001
Deep Space Infections	5.2	2.2–11.4	<0.001
Superficial Infection or Dehiscence	1.3	0.4–4.2	0.663
Renal Insufficiency	9.7	1.8–53.7	0.009
Urinary Tract Infection	2.4	0.5–10.3	0.253