Table 2.

Hazard ratios for diabetes incidence by blood pressure categories

Blood pressure categories	Number at risk	Diabetes cases	Person years	Diabetes cases per 100 000 person years	Age adjusted hazard ratios (95% CI)	Age and BMI adjusted hazard ratios (95% CI)	Age and multivariable adjusted* hazard ratios (95% CI)
Systolic blood pressure
< 130 mm Hg (normal)	1 279	109	36292	300	ref.	ref.	ref.
130 – 139 mm Hg (high-normal)	1 315	159	35541	447	1.56 (1.22-1.99)	1.39 (1.09-1.78)	1.43 (1.12-1.84)
140 – 159 mm Hg (mild hypertension)	2622	330	69845	472	1.66 (1.34-2.07)	1.40 (1.13-1.75)	1.43 (1.14-1.79)
≥ 160 mm Hg (moderate/severe)	2117	358	51695	693	2.68 (2.16-3.32)	2.03 (1.63-2.52)	1.95 (1.55-2.46)
Increase per 10 mm Hg					1.16 (1.13-1.18)	1.12 (1.08-1.14)	1.10 (1.07-1.14)
Diastolic blood pressure
< 85 mm Hg (normal)	1628	157	45528	345	ref.	ref.	ref.
85 – 89 mm Hg (high normal)	896	83	24227	343	1.02 (0.78-1.33)	0.95 (0.72-1.23)	0.93 (0.70-1.22)
≥ 90 mm Hg (hypertension)	4809	716	123617	579	1.82 (1.53-2.16)	1.41 (1.18-1.68)	1.34 (1.12-1.62)
Increase per 5 mm Hg					1.14 (1.12-1.17)	1.09 (1.06-1.11)	1.08 (1.06-1.11)

*Multivariable adjusted model included age, body mass index, cholesterol level, antihypertensive treatment, smoking, physical activity and occupational class.