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Table 3 Results of screening tests stratified by the presence or absence of coronary artery disease

From: Use of imaging and clinical data to screen for cardiovascular disease in asymptomatic diabetics

Screening tests All subjects (n = 98) Subjects with coronary artery disease (n = 43) Subjects without coronary artery disease (n = 55) p Value
Coronary artery calcium
 0 60 (61.0 %) 5 (11.6 %) 55 (100 %) <0.01
 ≥ 1 (Agatston score) 38 (38.8 %) 38 (88.4 %) 0 (0 %)
Carotid artery ultrasound
 Maximum intima medial thickness (IMT), mm 0.75 ± 0.16 0.80 ± 0.20 0.70 ± 0.11 <0.01
 IMT ≥ 1.0 mm (#, %) 11 (11.2 %) 11 (25.6 %) 0 <0.01
 Carotid plaque (#, %)     
 No carotid plaque 55 (56.1 %) 18 (41.9 %) 37 (67.3 %) 0.01
 Carotid plaque 43 (43.9 %) 25 (58.4 %) 18 (32.7 %)
 Carotid plaque or IMT ≥ 1.0 mm 44 (44.9 %) 26 (60.5 %) 18 (32.7 %) <0.01
Exercise treadmill test
 ECG test results (#, %)
  Negative 69 (70.4 %) 26 (60.5 %) 43 (78.2 %) 0.04
  Positive 8 (8.2 %) 7 (16.3 %) 1 (1.8 %)
  Negative with <85 % MPHR 20 (20.4 %) 10 (23.3 %) 10 (18.2 %)
  Inconclusive due to LBBB 1 (1.0 %) 0 1 (1.8 %)
 Specific test outcomes
  METS 8.5 ± 2.1 8.2 ± 1.8 8.7 ± 2.4 0.19
  Duke treadmill score 8.3 ± 4.8 7.1 ± 5.0 9.2 ± 4.4 0.03
  1. p Values calculated using two-tailed t test, Chi squared test, and Kruskal–Wallis test
  2. MPHR maximal predicted heart rate