Table 3.

Stroke-associated pneumonia and explanatory variables (logistic regression analysis)

		Odds ratio (95% Confidence Interval)	P-value
Male		1.86 (1.31–2.67)	0.001
Age (reference 18–59 years)	60–69	0.91 (0.50–1.66)	0.757
	70–79	1.11 (0.63–1.94)	0.725
	80–89	1.43 (0.81–2.52)	0.215
	≥90	2.34 (1.15–4.77)	0.019
Body mass index (reference 18.5–24.9 kg/m2)	<18.5	1.21 (0.73–2.02)	0.458
	≥25	0.74 (0.50–1.14)	0.172
Japan coma scale 3-digit code (reference ≤2-digit codes)		3.57 (2.53–5.05)	<0.0001
Resided at home (reference other than home)		0.66 (0.37–1.19)	0.165
Previous stroke		0.81 (0.51–1.27)	0.361
Hypertension		2.28 (1.39–3.73)	0.001
Diabetes		1.59 (1.11–2.26)	0.011
Respiratory disease		7.74 (5.49–10.90)	<0.0001
Dementia		1.43 (0.85–2.40)	0.175
Heart failure		1.72 (1.04–2.85)	0.033
Study period (reference Pre)	Post-1	0.49 (0.31–0.76)	0.002
	Post-2	0.38 (0.25–0.61)	<0.0001
	Post-3	0.24 (0.15–0.40)	<0.0001