TABLE 3.

Risk of SAP in each period

	Period A	Period B	Period C	P‐value
All patients	n = 725	n = 469	n = 522
Clinical diagnosis
Event, n (%)	110 (15.2)	72 (15.4)	64 (12.3)	.17
Multivariable‐adjusted OR (95% CI)	1.00 (reference)	1.03 (0.73‐1.44)	0.61 (0.43–0.87)	.01
Criteria‐based diagnosis
Event, n (%)	102 (14.1)	65 (13.9)	63 (12.1)	.32
Multivariable‐adjusted OR (95% CI)	1.00 (reference)	0.99 (0.69‐1.40)	0.67 (0.46‐0.96)	.04
Patients without neurosurgical treatment	n = 676	n = 424	n = 442
Clinical diagnosis
Event, n (%)	94 (13.9)	58 (13.7)	42 (9.5)	.04
Multivariable‐adjusted OR (95% CI)	1.00 (reference)	0.99 (0.68‐1.44)	0.52 (0.34‐0.78)	.004
Criteria‐based diagnosis
Event, n (%)	87 (12.9)	51 (12.0)	41 (9.3)	.08
Multivariable‐adjusted OR (95% CI)	1.00 (reference)	0.93 (0.63‐1.37)	0.57 (0.37‐0.86)	.01

Note: Multivariable model included age, sex, and consciousness level.

Abbreviations: CI, confidence interval; OR, odds ratio; SAP, stroke‐associated pneumonia.