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. 2006 Jun 3;332(7553):1306–1311. doi: 10.1136/bmj.38849.440914.AE

Table 1.

Patient characteristics. Values are numbers (percentages) unless stated otherwise

Characteristic
Cardiologist (n=30 383)
Non-cardiologist (n=53 216)
Inter-hospital median (IQR) Inter-hospital median (IQR)
All patients % All patients %
Age >75 years 9611/30 080 (32.0) 31 (23-38) 23 668/52 140 (45.4) 43 (35-51)
Male 20 538/30 252 (67.9) 69 (65-74) 33 256/53 065 (62.7) 64 (59-68)
Current smoker 9442/27 538 (34.3) 33 (26-40) 12 985/47 267 (27.5) 28 (23-33)
ST elevation MI 15 282/30 383 (50.3) 50 (39-68) 17 881/53 216 (33.6) 34 (25-51)
Comorbidity*
Group 1:
Heart failure 1229/25 156 (4.9) 3 (1-7) 3900/48 580 (8.0) 6 (3-11)
Diabetes 5033/28 076 (17.9) 17 (13-22) 10 109/49 079 (20.6) 20 (16-25)
Cerebrovascular disease 1863/25 632 (7.3) 6 (3-9) 4698/48 270 (9.7) 9 (6-12)
Obstructive pulmonary disease 3317/25 278 (13.1) 13 (9-16) 7567/48 584 (15.6) 15 (12-19)
Chronic renal failure 729/25 144 (2.9) 2 (0-4) 2011/48 578 (4.1) 3 (1-5)
One or more of above 9673 (31.8) 33 (26-39) 21206 (39.8) 40 (31-47)
Group 2:
Previous acute MI 7059/29 005 (24.3) 24 (17-29) 13 644/50 743 (26.9) 26 (21-31)
Previous angina 8618/28 707 (30.0) 29 (20-35) 16 700/49 887 (33.5) 33 (26-38)
Treated hyperlipidaemia 7885/26 913 (29.3) 28 (18-40) 12 872/47 671 (27.0) 25 (18-38)
Treated hypertension 12 534/28 693 (43.7) 44 (37-50) 22 741/49 938 (45.5) 45 (38-51)
Peripheral vascular disease 1357/27 130 (5.0) 4 (1-6) 2620/48 508 (5.4) 5 (2-7)
One or more of above 11 044 (36.3) 35 (26-43) 20 502 (38.5) 38 (29-44)

IQR=interquartile range; MI-myocardial infarction.

*

Divided into two groups: in group 1, differences in frequency persisted after age stratification; in group 2, differences did not persist.