Table 3.

Women's characteristics associated with the use of prenatal corticosteroids in the multivariate model

Characteristics	El Salvador		Ecuador		Uruguay
	OR	(95% CI)	OR	(95% CI)	OR	(95% CI)
Age, y
≤15a			1.00d	-
16–34			6.85	(0.88–53.06)
>34			11.70	(1.39–98.58)
Previous hospital admission during the index pregnancy
Noa			1.00e	-	1.00g	-
Yes			3.91	(2.25–6.78)	2.83	(1.46–5.51)
Type of preterm birth
Spontaneous preterm birth (unknown cause)a					1.00h	-
Preterm birth with PPROM**					4.23	(1.69–10.63)
Medically indicated preterm birth					1.00	(0.45–2.23)
Gestational age at delivery, wk
<28a	1.00c	-	1.00f	-
28–31	2.22	(1.05–4.66)	5.03	(1.39–18.27)
32–33	1.93	(0.94–3.99)	5.21	(1.48–18.28)
34	0.60	(0.28–1.25)	1.45	(0.38–5.55)
Time from admission to delivery, h
<3a	1.00c	-	1.00f	-	1.00h	-
3–11.59	2.45	(1.40–4.28)	1.97	(0.92–4.26)	5.73	(2.17–15.12)
12–23.59	2.22	(1.16–4.24)	6.41	(2.37–17.33)	10.30	(2.58–41.12)
≥24	5.96	(3.28–10.84)	22.85	(10.83–48.15)	12.37	(5.36–28.59)

^aReference group.

^bPPROM, preterm premature rupture of membranes.

^cModel 1, El Salvador: Gestational age at delivery and time from admission to delivery.

^dModel 1, Ecuador: Age

^eModel 2, Ecuador: Model 1 plus previous hospital admission during the index pregnancy.

^fModel 3, Ecuador: Model 2 plus gestational age at delivery and time admission to delivery.

^gModel 1, Uruguay: Previous hospital admission during the index pregnancy.

^hModel 2, Uruguay: Model 1 plus spontaneous preterm birth and time from admission to delivery.