Skip to main content

Table 2 Diagnostic accuracy in development dataset 1 using each level of the MAINTAIN instrument as possible discrimination thresholds to classify dysfunctional patients (96 individuals were classified as dysfunctional by the original instrument in this sample)

From: Development and evaluation of the MAINTAIN instrument, selecting patients suitable for secondary or tertiary preventive manual care: the Nordic maintenance care program

Development dataset 1 (n = 249)
MS n (DYS) Sensitivity (%) Specificity (%) PPV (%) NPV (%) Youden’s index
8 229 100.0 13.0 41.5 100.0 0.110
9 224 100.0 16.2 42.4 100.0 0.130
10 220 100.0 18.8 43.2 100.0 0.162
11 218 100.0 20.1 43.6 100.0 0.188
12 205 100.0 28.6 46.3 100.0 0.201
13 201 100.0 31.2 47.3 100.0 0.286
14 193 100.0 36.4 49.2 100.0 0.312
15 180 98.9 44.2 52.2 98.6 0.364
16 173 98.9 48.7 54.3 98.7 0.431
17 159 96.8 56.5 57.9 96.7 0.476
18 146 95.8 64.3 62.3 96.1 0.533
19 140 94.7 67.5 64.3 95.4 0.601
20 133 90.5 69.5 64.7 92.2 0.623
21 122 86.3 74.0 67.2 89.8 0.600
22 109 81.1 79.2 70.6 87.1 0.603
23 103 75.8 79.9 69.9 84.2 0.603
24 92 70.5 83.8 72.8 82.2 0.557
25 84 63.2 84.4 71.4 78.8 0.543
26 74 60.0 89.0 77.0 78.3 0.476
27 67 55.8 90.9 79.1 76.9 0.490
  1. MS, MAINTAIN Score (emphasis represent recommended thresholds); n(DYS), number of individuals classified as dysfunctional by the MAINTAIN instrument at that threshold; PPV, Positive Predictive Value; NPV, Negative Predictive Value