Table 4.

Incidence rate of ischaemic heart disease per 1000 person-years

Men
Age	Without diabetes				With diabetes
	IR	95% CI	Cases	Person-time	IR	95% CI	Cases	Person-time	IRR	95% CI
≤ 54	3.06	2.77–3.37	406	132,643.08	9.14	6.64–12.28	44	4812.71	2.99	2.19–4.08
55–64	7.74	7.08–8.44	510	65,918.29	14.11	11.27–17.45	85	6024.63	1.82	1.45–2.29
65–74	11.93	10.85–13.09	446	37,381.03	19.18	16.07–22.72	134	6984.80	1.61	1.33–1.95
≥ 75	14.48	12.52–16.65	196	13,538.92	20.55	16.19–25.72	76	3698.83	1.42	1.09–1.85

Women
Age	Without diabetes				With diabetes
	IR	95% CI	Cases	Person-time	IR	95% CI	Cases	Person-time	IRR	95% CI
≤ 54	1.47	1.27–1.69	193	131,169.68	4.05	2.36–6.49	17	4194.19	2.76	1.69–4.52
55–64	4.28	3.82–4.79	305	71,182.35	10.22	7.78–13.19	59	5771.95	2.39	1.81–3.15
65–74	7.40	6.65–8.21	353	47,722.13	11.72	9.33–14.52	83	7084.93	1.58	1.25–2.01
≥ 75	10.06	8.74–11.53	207	20,571.43	11.99	9.01–15.65	54	4502.30	1.19	0.88–1.61

Both
Age	Without diabetes				With diabetes
	IR	95% CI	Cases	Person-time	IR	95% CI	Cases	Person-time	IRR	95% CI
≤ 54	2.27	2.09–2.46	599	263,812.76	6.78	5.18–8.70	61	9006.90	2.98	2.29–3.88
55–64	5.95	5.54–6.37	815	137,100.64	12.21	10.29–14.37	144	11,796.57	2.05	1.72–2.45
65–74	9.39	8.75–10.06	799	85,103.16	15.43	13.44–17.62	217	14,067.73	1.64	1.41–1.91
≥ 75	11.81	10.96–13.03	403	34,110.35	15.85	13.24–18.82	130	8201.13	1.34	1.10–1.64

CI: confidence interval; IR: incidence rate; IRR: incidence rate ratio

Incidence rate per 1000 person-years. Person-time in years