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Table 1 Baseline characteristics of study participants (N = 4052)

From: Psychometric evaluation of a Canadian version of the Seattle Angina Questionnaire (SAQ-CAN)

Patients’ characteristics n (%)
Age, y, mean (SD) 65.93 (9.84)
Sex (male), n (%) 3239 (79.94)
Left ventricular ejection fraction, n (%)  
> 50% 2645 (65.28)
35–50% 475 (11.72)
20–34% 110 (2.71)
< 20% 24 (0.59)
Not done 798 (19.69)
HADS-depression, mean (SD) 14.44 (2.93)
HADS-anxiety, mean (SD) 17.04 (4.26)
Diabetes mellitus, n (%) 1106 (27.30)
Hypertension, n (%) 3124 (77.10)
Hyperlipidemia, n (%) 3285 (81.07)
Prior MI, n(%) 647 (15.97)
Prior thrombolytic therapy, n (%) 5 (0.12)
BMI, mean (SD) 30.39 (44.18)
Smoking, n (%) 445 (11.31)
SAQ subscales, mean (SD)  
Physical limitation 60.93 (20.75)
Angina stability 71.00 (29.64)
Angina frequency 78.96 (23.18)
Treatment satisfaction 82.21 (17.31)
Disease perception 61.39 (25.25)
  1. NB: Data are presented as frequencies (n or N), percentages (%), standard deviation (SD), HADS: anxiety and depression scale, MI myocardial infarction, BMI body mass index, SAQ Seattle Angina Questionnaire, SD standard deviation