Table 4 In‐hospital mortality of all patients (n = 20 266)* with acute coronary syndrome according to age categories.

Age categories (years)	ORs (95% CI for OR)
	Female unadjusted	Female adjusted†
⩽50 (n = 2960)	2.94 (1.70 to 5.09)	1.66 (0.69–4.05)
51–60 (n = 4248)	1.66 (1.07 to 2.59)	1.78 (1.04–3.04)
61–70 (n = 5023)	1.35 (1.02 to 1.81)	1.33 (0.93–1.91)
71–80 (n = 5453)	1.05 (0.88 to 1.25)	1.07 (0.86–1.33)
>80 (n = 2582)	1.00 (0.83 to 1.21)	0.91 (0.72–1.15)
All age categories	1.77 (1.59 to 1.98)	1.44 (1.26–1.65)

Male (reference)  =  1.

*24 Patients could not be included in this analysis because they had missing values for some of the adjustment variables.

†For Killip class, history of diabetes, hypertension, dyslipidaemia, ST elevation on initial ECG and percutaneous coronary intervention.