Table 3 Risk of cardiovascular death in the subgroup with those died in the first 3 years excluded

	Optimal	Normal/non-optimal	High-normal	Grade I hypertension	Grade II hypertension	Grade III hypertension	Total
Very elderly (75–89 years)
No. at risk	296	429	648	1087	518	190	3168
Person-years	2518	3655	5372	9298	4620	1712	27 175
CVD deaths	20	34	81	150	94	40	419
Crude rate^a	7.94	9.3	15.08	16.13	20.35	23.37	15.42
HR^b	1	1.17 (0.67–2.04)	1.87 (1.14–3.05)	1.91 (1.19–3.07)	1.83 (1.12–3.01)	2.14 (1.23–3.72)	—
Elderly (65–74 years)
No. at risk	1829	2141	2980	4136	1655	437	13 178
Person-years	15 970	18 998	25 923	38 126	15 789	4315	119 120
CVD deaths	39	78	77	223	117	51	585
Crude rate^a	2.44	4.11	2.97	5.85	7.41	11.82	4.91
HR^b	1	1.62 (1.10–2.38)	1.19 (0.81–1.76)	2.01 (1.42–2.85)	2.26 (1.55–3.29)	3.28 (2.13–5.04)	—
Middle-aged (40–64 years)
No. at risk	12 440	10 811	10 400	11 057	3657	1066	49 431
Person-years	132 096	117 053	109 187	121 997	40 667	12 700	533 700
CVD deaths	40	69	87	155	102	60	513
Crude rate^a	0.3	0.59	0.8	1.27	2.51	4.72	0.96
HR^b	1	1.75 (1.19–2.60)	2.08 (1.43–3.05)	2.91 (2.03–4.16)	5.21 (3.55–7.64)	8.39 (5.50–12.8)	—

Abbreviations: CVD, cardiovascular disease; HR, hazard ratio.
^aCrude rate was expressed as per 1000 person-year.
^bHazard ratio (95% confidence interval) adjusted for age (years), sex, cohort, body mass index (kg m⁻²), total cholesterol (mmol l⁻¹), smoking (current, never, past) and drinking (current, never, past).

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