Table 1 Summary of socio-demographics, clinical history and rehabilitation

Mean age in years (median, range)

64.54 (65.00,40-80)

61.05 (63.01,24-82)

<0.001

Gender

 Males

71 (85%)

11 (13%)

<0.001

 Females

13 (15%)

73 (87%)

Employment:

 Employed

17 (20%)

31 (37%)

0.030

 Unemployed

7 (8%)

11 (13%)

 Retired

60 (71%)

42 (50%)

Occupation:

 Professional – intermediate

26 (31%)

11 (13%)

0.046

 Skilled non manual –manual

19 (23%)

20 (24%)

 Partly skilled – unskilled

39 (46%)

53 (63%)

Mean years of education (median, range)

11.57 (10.00, 9–21)

11.04 (10.00, 9–20)

0.742

Social deprivation:

-

 Depcat 1 - 2

24 (28%)

-

-

 Depcat 3 – 5

41 (49%)

-

 Depcat 6 – 7

19 (23%)

-

Hypertension

53 (63 %)

7 (8%)

<0.001

Diabetes mellitus

19 (23%)

2 (2%)

<0.001

Angina

78 (93%)

-

Mean age onset of angina (median, range)

54.8 (60.00, 40–79)

-

Breathlessness

46 (55%)

-

Myocardial infarction (MI)

32 (38%)

-

Mean age of first MI (median, range)

52.7 (60.50, 32–75)

Number of first MI

27 (32%)

-

Canadian Cardiovascular Society (CCS)

 CCS 1 – 2

42 (50%)

-

 CCS 3 – 4

47 (56%)

-

 Missing or no chest pain

6 (7%)

-

New York Heart Association (NYHA)

Class 1 - 2

32 (38%)

-

Class 3 - 4

36 (43%)

-

Missing

5 (6%)

-

Left venticular ejection fraction

 > 50%

55 (65%)

-

 30 – 49% (moderate impairment)

20 (24%)

-

 < 29% (severe impairment)

2 (3%)

-

 Missing

7 (8%)

-

Number of diseased vessels

 Single-vessel disease

7 (8%)

-

 Two-vessel disease

28 (34%)

-

 Three-vessels

43 (51%)

-

 Missing

6 (7%)

-

Mean waiting time for surgery in days

63.17

-

Length of hospital stay days (median, range)

7 (4–21)

-

Attendance at cardiac rehabilitation

50 (62%)

2 (2%)

<0.001