Table 2. Associations Between Baseline Blood Pressure Measures and Incident Stroke, by Ethnicity.

		Europeans		South Asians
BP Measure	Model Factors	OR	95% CI	OR	95% CI	P Value*
SBP	Age	1.21	1.00–1.47†	1.63	1.34–1.97‡	0.04
	Age+CVD risk factors§	1.22	0.98–1.51	1.56	1.24–1.95‡	0.04
DBP	Age	0.91	0.74–1.13	1.64	1.33–2.03‡	<0.001
	Age+CVD risk factors§	0.90	0.71–1.13	1.68	1.32–2.15‡	<0.001
MAP	Age	1.04	0.85–1.28	1.69	1.38–2.08‡	0.001
	Age+CVD risk factors§	1.04	0.82–1.30	1.69	1.34–2.14‡	0.001
PP	Age	1.39	1.15–1.68∥	1.35	1.10–1.64∥	0.73
	Age+CVD risk factors§|	1.40	1.13–1.72∥	1.24	0.99–1.55	0.80
SBP	Age	1.58	1.22–2.07∥	1.38	1.04–1.82†	0.44
DBP		0.66	0.50–0.87∥	1.28	0.95–1.74	0.001
SBP	Age+CVD risk factors§	1.59	1.20–2.13∥	1.24	0.91–1.70	0.50
DBP		0.66	0.49–0.89∥	1.43	1.01–2.01∥	0.001
MAP	Age	0.88	0.71–1.11	1.64	1.30–2.08‡	<0.001
PP		1.46	1.18–1.81 ‡	1.06	0.84–1.34	0.04
MAP	Age+CVD risk factors§	0.88	0.68–1.12	1.72	1.31–2.25‡	<0.001
PP		1.47	1.17–1.85∥	0.97	0.75–1.26	0.04

Excludes participants with baseline stroke or receipt of antihypertensive medication. Data are OR for a 1 SD increase in BP measure unless otherwise stated. CI indicates confidence interval; CVD, cardiovascular disease; DBP, diastolic blood pressure; MAP, mean arterial pressure; OR, odds ratio; PP, pulse pressure; and SBP, systolic blood pressure.

^*P for ethnicity×BP interaction.

^†P<0.05.

^‡P<0.001.

^§CVD risk factors comprise: smoking, waist/hip ratio, total/high-density lipoprotein-cholesterol ratio, diabetes mellitus, fasting glucose, physical activity, and heart rate.

^∥P<0.01.