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Table 4 Association between the improvements in SAQ and MSIMI

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

  Non-MSIMI MSIMI Statistics P
Physical limitations
 Improvement value 25.4 ± 21.0 30.7 ± 20.7 t = 1.725 0.086
 Has been improved 83 (89.2) 86 (94.5) χ2 = 1.698 0.192
 Improved ≥ 8 71 (76.3) 80 (87.9) χ2 = 4.182 0.041
Angina frequency
 Improvement value 55.9 ± 34.5 52.2 ± 40.6 t = 0.670 0.504
 Has been improved 82 (88.2) 71 (78.0) χ2 = 3.382 0.066
 Improved ≥ 20 82 (88.2) 71 (78.0) χ2 = 3.382 0.066
Angina stability
 Improvement value 30.3 ± 32.1 30.1 ± 32.5 t = 0.045 0.964
 Has been improved 70 (75.3) 69 (75.8) χ2 = 0.008 0.930
 Freedom from angina 57 (61.3) 51 (56.0) χ2 = 0.522 0.470
Treatment satisfaction
 Improvement value 16.8 ± 49.9 15.7 ± 20.0 t = 0.190 0.849
 Has been improved 69 (74.2) 65 (71.4) χ2 = 0.178 0.673
Quality of life
 Improvement value 13.1 ± 29.9 − 0.2 ± 32.7 t = 2.863 0.005
 Has been improved 57 (61.3) 40 (44.0) χ2 = 5.545 0.019
Improved ≥ 16 47 (50.5) 29 (31.9) χ2 = 6.613 0.010
  1. SAQ: Seattle Angina Questionnaire; MSIMI: mental stress-induced myocardial ischaemia. P values < 0.05 are shown in bold