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Table 3 Results for the respective quantitative variables and visual interpretations (QV), A-reserve, (A-r), β-reserve, (β-r) and Axβ-reserve (Axβ-r), visual RTP-ASE interpretation with complementary wall motion (Vis 1) and with sole perfusion interpretation (Vis 2).

From: Quantitative detection of myocardial ischaemia by stress echocardiography; a comparison with SPECT

QV Coronary Territory Acc
(%)
Sens (%) Spec (%) PPV
(%)
NPV
(%)
kappa AUC
A All 43 39 75 11 94 NS 0.529 NS
A LAD 67 66 75 27 94 0.237 * 0.705 NS
A LCx 29 28 50 6 87 NS 0.229 NS
A RCA 32 28 100 8 100 NS 0.518 NS
β All 80 83 56 25 95 0.249 *** 0.678 *
β LAD 82 83 75 43 95 0.442 ** 0.773 *
β LCx 82 94 25 25 94 NS 0.590 NS
β RCA 72 74 50 11 96 NS 0.666 NS
Axβ All 75 77 63 22 95 0.213 ** 0.665 *
Axβ LAD 82 83 75 43 95 0.442 ** 0.818 **
Axβ LCx 90 96 25 33 94 NS 0.404 NS
Axβ RCA 58 57 75 10 97 NS 0.680 NS
A Patient wise 35 11 100 29 11 NS NA
β Patient wise 60 53 79 38 87 0.233 * NA
Axβ Patient wise 47 38 73 31 79 NS NA
Vis 1 All 93 90 93 59 99 0.67 *** NA
Vis 1 LAD 87 90 86 53 98 0.59 *** NA
Vis 1 LCx 94 100 94 56 100 0.68 *** NA
Vis 1 RCA 96 75 100 100 98 0.85 *** NA
Vis 1 Patient wise 90 89 90 76 96 0.75 *** NA
Vis 2 All 92 94 92 55 99 0.67 *** NA
Vis 2 LAD 86 100 83 53 100 0.61 *** NA
Vis 2 LCx 94 100 94 57 100 0.68 *** NA
Vis 2 RCA 95 75 97 60 98 0.64 *** NA
Vis 2 Patient wise 89 91 88 71 97 0.73 *** NA
  1. A, peak signal intensity; β, myocardial blood flow velocity; Axβ, myocardial blood flow; Acc, accuracy; Sens, sensitivity; Spec, specificity; PPV, positive predictive value; NPV, negative predictive value; AUC, area under the curve; * = p < 0.05; ** = p < 0.01; *** = p < 0.001; NS, not significant; NA, not applicable. Bold indicates significance and italics indicates not significant or not applicable.