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Table 4 Step 1 experimental results

From: V-Model: a new perspective for EHR-based phenotyping

Evaluation item n LifeLines (N = 40) V-Model (N = 40) Statistical analysis
n_c (accuracy) RT (sec.) median, IQR(25–75) n_c (accuracy) RT (sec.) median, IQR (25–75) chi-squared test (p-value) MWU test (p-value)
Representation        
[P1] P-A connection 140 71 (50.71) 43.32 (33.08-61.91) 115 (82.14) 35.31 (24.99-50.24) <0.000 <0.000
[P2] non-explicitness 40 - - 36 (90.00) - - -
[P3] proximity 80 - - 74 (92.50) - - -
Reasoning        
[R1] P precedes A 40 36 (90.00) 35.48 (25.23-47.77) 40 (100.00) 14.9 (12.15-18.74) 0.116 <0.000
[R2] qualitative relation 80 76 (95.00) 7.6 (5.16-11.97) 69 (86.25) 9.95 (6.23-13.84) 0.058 0.036
[R3] implicit distance 40 - - 40 (100.00) - - -
Visualization        
[V1] intuitive P-A relation 140 104 (74.29) 32.17 (21.46-54.07) 125 (89.29) 19.48 (15-
29.58)
<0.000 <0.000
  40 25 (62.50) 56.82 (44.92-80.35) 21 (52.50) 45.72 (33.93-62.79) 0.366 0.006
[V5] long history 40 22 (55.00) 92.7 (69.64-134.48) 38 (95.00) 35.23 (25.84-40.46) <0.000 <0.000
Evaluation item Group LifeLines (%) V-Model (%)
[P04] uneven granularity V-Model participants 3.75 96.25
(selection) LifeLines participants 7.5 92.5
  mean 5.63 94.38
[V04] dynamic scale V-Model participants 5 95
(preference) LifeLines participants 25 75
  mean 15 85
  1. N, number of data; N, number of participants; n_c, number of correct answers.