Skip to main content

Table 1 Characteristics of the MSIMI and non-MSIMI groups before revascularization

From: Association between quality of life and mental stress-induced myocardial ischaemia in high-risk patients after coronary revascularization

  Non-MSIMI MSIMI Statistics P
N 100 105(51.2)   
Age (years) 59.3 ± 10.0 60.2 ± 10.1 t = 0.626 0.532
Sex [female (%)] 25 (25.0) 39(37.1) χ2 = 3.517 0.061
Hypertension (%) 63 (63.0) 72 (68.6) χ2 = 0.707 0.400
Hyperlipidaemia (%) 59 (59.0) 65 (61.9) χ2 = 0.181 0.671
Diabetes (%) 40 (40.0) 31 (29.5) χ2 = 2.483 0.115
Depression historya (%) 6 (6.0) 6 (5.7) χ2 = 0.008 0.931
Current smoking (%) 38 (38.0) 32 (30.5) χ2 = 1.289 0.256
Smoking history (%) 60 (60.0) 57 (54.3) χ2 = 0.683 0.409
Drinking history (%) 55 (55.0) 40 (38.1) χ2 = 5.886 0.015
Family history of CAD (%) 30 (30.0) 23 (21.9) χ2 = 1.751 0.186
Disease durationb (month) 6.0 (1.0/36.0) 18.0 (2.0/66.0) U = 2.505 0.012
Number of eventsc 0.0 (0.0/1.0) 0.0 (0.0/1.0) U = 1.819 0.069
SYNTAX score 17.0 (8.0/29.8) 18.0 (10.5/28.0) U = 0.775 0.438
Residual SYNTAX 0.0 (0.0/3.0) 0.0 (0.0/7.5) U = 1.804 0.071
Number of diseased blood vessels 2.0 (1.0/3.0) 2.0 (1.0/3.0) U = 0.708 0.708
CAD type (%)    χ2 = 3.093 0.377
 SAP 13 (13.0) 19 (18.1)   
 UAP 62 (62.0) 69 (67.5)   
 NSTEMI 9 (9.0) 5 (4.8)   
 STEMI 16 (16.0) 12 (11.4)   
Revascularization type    χ2 = 3.824 0.281
 PCI 94 (94.0) 97 (92.4)   
 CABG 6 (6.0) 8 (7.7)   
PHQ-9 before revascularization 6.6 ± 3.1 7.9 ± 4.3 t = 2.368 0.019
GAD-7 before revascularization 5.1 ± 4.3 6.1 ± 5.0 t = 1.511 0.132
PHQ-9 after revascularization 3.7 ± 3.3 3.7 ± 3.3 t = 0.071 0.943
GAD-7 after revascularization 2.4 ± 3.0 2.3 ± 2.5 t = 0.394 0.694
  1. MSIMI: mental stress-induced myocardial ischaemia; CAD: coronary artery disease; SAP: stable angina pectoris; UAP: unstable angina pectoris; NSTEMI: non-ST elevated myocardial infarction; STEMI: ST elevated myocardial infarction. PHQ-9: Patient Health Questionnaire-9; GAD-7: Generalized Anxiety Disorder-7; SYNTAX: Synergy between PCI with Taxus and Cardiac Surgery. P values < 0.05 are shown in bold
  2. aDepression history means patients have been diagnosed with depression in their medical history
  3. bDisease duration means the earliest onset time from symptom onset to the time of hospitalization (in months)
  4. cNumber of events refers to how many cardiovascular events (including non-fatal myocardial infarction, any coronary revascularization) the patient experienced throughout the course of the disease