Table 2.

The number of monocytes^* in patients with and without infection

Infection by day 15:	All patients				Patients with infection at 72 h eliminated (n = 7)
	Yes n = 26	No n = 77	Uncontrolled	Controlled for NIHSS	Yes n = 19	No n = 77	Uncontrolled	Controlled for NIHSS
	Yes n = 26	No n = 77	p	p	Yes n = 19	No n = 77	p	p
Monocytes^* (thou/microL)	0.88 (0.58, 1.13)	0.65 (0.46, 0.83)	0.012	NS	1.04 (0.65, 1.20)	0.65 (0.46, 0.83)	<0.001	0.063

Predictive value	Uncontrolled		Controlled for NIHSS		Uncontrolled		Controlled for NIHSS
Predictive value	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p	OR (95% CI)	p
Monocytes^* (per thou/microL)	10.14 (2.09–49.26)	0.004	2.12 (0.30–15.16)	NS	34.35 (4.86–242.74)	<0.001	8.81 (0.68–98.12)	p = 0.097

The number is higher among patients destined for infection in the first 15 days after stroke onset, and the difference is even more marked after eliminating patients with infection in the first 3 days after stroke onset. The difference in monocytes numbers is attenuated by controlling for stroke severity. Similarly, the odds for infection rises dramatically with every 1000 monocytes per microliter of blood and is most notable in those patients who are infection free at the time the blood was drawn.

Data are presented as median (interquartile range) and statistics are by Mann–Whitney U test.

Highest value by 72 h after stroke onset. thou/microL, thousand per microliter; NIHSS, National Institutes of Health Stroke Scale; OR, odds ratio; CI, confidence interval; NS, not significant (p > 0.200).