Table 1 Characteristic of the respondents in the PCI group and the non-significant stenosis group at pre-assessment

Patients receiving PCI

(n = 121)

Non-significant stenosis group (n = 159)

Mean age (SD) years

68.2 (8.0)*

66.0 (9.5)*

Male (%)

78.5***

54.1***

Cohabitation (%)

83.9*^a

73.3*^b

Highest education (%)

_c

_d

Primary school

32.8

41.1

High school

41.2

29.7

University

26.1

29.1

Previous PCI (%)

37.2

27

Previous CABG (%)

17.4***

0***

Previous heart attack (%)

19.0

16.4