Table 5.

Risk for death among foetuses alive at maternal admission for delivery, among infants born alive, and risk for neonatal morbidity in six Swedish healthcare regions compared with the reference region (Stockholm). Only regions and outcomes with significantly different risks compared with the reference are shown

	Region	Gestational age, weeks	OR 95% CI
Crude			Adjusted†
Alive at maternal admission
Stillbirth	Uppsala	22–24	0.2, 0.1–0.6	0.3, 0.1–0.9
	Uppsala	22–26	0.4, 0.2–0.8
	Göteborg	22–24		2.4, 1.0–5.2
Perinatal death	Uppsala	22–24	0.2, 0.1–0.3	0.1, 0.0–0.3
	Uppsala	22–26	0.4, 0.3–0.7	0.5, 0.3–0.9
	Umeå	22–24	0.4, 0.2–0.8
	Umeå	22–26	0.6, 0.3–1.0
Death before 365 days	Uppsala	22–24	0.3, 0.1–0.5	0.2, 0.1–0.5
	Uppsala	22–26	0.5, 0.3–0.8
	Umeå	22–24	0.4, 0.2–0.8	0.4, 0.2–1.0*
	Umeå	22–26	0.5, 0.3–0.9
Born alive
Death before 365 days	Uppsala	22–24	0.3, 0.2–0.7	0.3, 0.1–0.7
	Uppsala	22–26	0.6, 0.4–1.0
	Umeå	22–24	0.3, 0.1–0.7	0.4, 0.1–1.0**
	Umeå	22–26	0.4, 0.2–0.8	0.4, 0.2–0.8
Death before 12 h	Uppsala	22–24	0.1, 0.1–0.3	0.0, 0.0–0.1
	Uppsala	22–26	0.2, 0.1–0.4	0.1, 0.0–0.4
	Lund	22–24	0.2, 0.1–0.5	0.3, 0.1–0.9
	Lund	22–26	0.3, 0.2–0.7
	Umeå	22–24	0.2, 0.1–0.5	0.2, 0.1–0.5
	Umeå	22–26	0.3, 0.1–0.8
Major neonatal morbidity	Umeå	22–24	0.3, 0.1–1.0	0.3, 0.1–1.0

OR: odds ratio; Cl: confidence interval.

^†Outcomes were adjusted for gestational age (weeks) and (weeks²), multiple birth (yes/no), gender and birthweight standard deviation score ¹⁶. n values can be found in Table 4.

^*p = 0.05;

^**p = 0.06.