TABLE 2.

Primary and Persistent SA Decolonization According to Group Assignment and Stratum

Gestational Age	Enrollment Straina	Group	Decolonization, n (%)	No Decolonization, n (%)	Odds Ratio (95% CI)	P	Efficacy, %
Primary decolonization (mITT-8 group; n = 66 mupirocin recipients and 64 controls)
<28 wkb	MRSA	Mupirocin	2 (100)	0 (0)	—	.333	100
		Control	0 (0)	2 (100)	—	—	—
≥28 wkc	MRSA	Mupirocin	9 (100)	0 (0)	—	<.001	100
		Control	0 (0)	5 (100)	—	—	—
<28 wkb	MSSA	Mupirocin	16 (100)	0 (0)	—	<.001	100
		Control	1 (6)	15 (94)	—	—	—
≥28 wkc	MSSA	Mupirocin	35 (90)	4 (10)	171 (25–1699)	<.001	89
		Control	2 (5)	39 (95)	—
Total primary decolonizationd	All	Mupirocin	62 (94)	4 (6)	288 (58–1433)	<.001	94 (85–98)
		Control	3 (5)	61 (95)	—		—
Persistent decolonization (mITT-22 group, n = 46 mupirocin recipients and 48 controls)
<28 wk	MRSA	Mupirocin	1 (100)	0 (0)	—	.333	100
		Control	0 (0)	2 (100)	—	—	—
≥28 wk	MRSA	Mupirocin	2 (50)	2 (50)	—	.167	50
		Control	0 (0)	5 (100)	—	—	—
<28 wk	MSSA	Mupirocin	7 (47)	8 (53)	—	.006	47
		Control	0 (0)	14 (100)	—	—	—
≥28 wk	MSSA	Mupirocin	11 (42)	15 (58)	19 (2–851)	<.001	40
		Control	1 (4)	26 (96)	—	—	—
Total persistent decolonizationd	All	Mupirocin	21 (46)	25 (54)	37 (5–284)	<.001	44 (30–59)
		Control	1 (2)	47 (98)	—	—	—

—, not applicable.

^aInfants colonized with both MRSA and MSSA are listed as MRSA.

^bLess than 28 wk gestation and <8 wk postnatal age.

^cGreater than or equal to 28 wk gestation or <28 wk gestation and ≥8 wk of postnatal life.

^dMantel-Haenszel χ² test.