Page 98 - AN-4-2

Advanced Neurology PVT in Indonesian neurological patients

Table 5. Performance validity test specificity rates and cut‑off scores
Specificity rate
PVT ND (n=49) ND PS (n=42) Mixed etiology (n=47)
Mild (n=28) Major (n=21)
RDS
≤7 a 0.14 0.25 0.00 0.33 0.28
≤6 b 0.35 0.50 0.14 0.57 0.56
≤4 0.84 0.89 0.76 0.93 f 0.96 f
≤3 0.94 f 0.96 f 0.90 f 0.98 0.98
LDF-1
≤4 a, c 0.33 0.50 0.10 0.60 0.60
≤3 0.80 0.86 0.71 0.98 f 0.96 f
≤2 0.94 f 0.96 f 0.90 f 1.00 0.98
LDF-2
≤3 a, c 0.53 0.64 0.38 0.76 0.70
≤2 0.84 0.93 f 0.71 0.93 f 0.96 f
≤1 0.94 f 0.96 0.90 f 1.00 1.00
TMJPI
<89 a 0.24 0.36 0.10 0.57 0.64
<84 0.59 0.79 0.33 0.83 0.91 f
<79 0.76 0.93 f 0.52 0.88 0.94
<78 0.80 0.96 0.57 0.95 0.96
<62 0.94 f 0.96 0.90 f 1.00 0.98
NV-MSVT A Criteria
A1: ≤87; A2: ≤80 a 0.39 0.54 0.19 0.79 0.81
A1: ≤82; A2: ≤80 0.49 f 0.61 f 0.33 f 0.83 f 0.83 f
NV-MSVT d
B1: >−11; B2: <20; B3≥12 e 0.86 0.86 0.86 0.88 0.85
B1: >−11; B2: <20; B3≥13 0.88 0.86 0.90 f 0.88 0.87
B1: >−11; B2: <20; B3≥20 0.92 f 0.89 0.95 0.90 f 0.87
B1: >−11; B2: <20; B3≥22 0.94 0.93 f 0.95 0.90 0.87
B1: >−11; B2: <12; B3≥32 0.94 0.93 0.95 0.93 0.91 f
Notes: Based on the simulation study by Adhiatma et al. Cut-off score from the original RDS. Cut-off score from the original
a
32 c
22 b
development of LDF-1 and LDF-2. Specificity rate for the NV-MSVT as a single test, calculated by combining A and B criteria. Criterion
33 d
A1=(IR+DR+CNS+DRA+DRV+PA)/6; Criterion A2=(DR+CNS+DRA+DRV)/4; Criterion B1=PA –(DR+CNS+DRA+DRV)/4; Criterion
B2=(IR+DR+CNS)/3–(PA+FR)/2; B3=SD (IR, DR, CNS, DRA, DRV). Based on the NV-MSVT manual. The selected specificity rate for each PVT in
26 f
e
each clinical group.
Abbreviations: CNS: Consistency; DR: Delayed recognition; DRA: Delayed recognition archetypes; DRV: Delayed recognition variations; FR: Free
recall; IR: Immediate recognition; LDF-1: Longest digit forward-1 trial; LDF-2: Longest digit forward-2 trials; ND: Neurocognitive disorder due to
possible neurodegenerative disease group; NV-MSVT: Non-verbal medical symptom validity test; PA: Paired associates; PS: Post-stroke group;
PVT: Performance validity test; RDS: Reliable digit span; TMJPI: Tes Memori Jangka Pendek Indonesia.
of patients with ND (n = 49), PS (n = 42), and a mixed- In addition, we analyzed the intercorrelation between PVT
etiology group (n = 49) and then examined the specificity scores, as well as the correlations between the PVT scores,
rates based on a previous simulation study. Cut-off scores demographic variables, and MMSE scores.
22
were adjusted for each clinical group until the specificity Descriptive results indicated that all groups had lower
reached at least 0.90. Using the new cut-off scores, we then PVT scores than the healthy participants in the previous
explored how many participants failed at least two PVTs. study. This finding is in line with other studies showing that
22

Volume 4 Issue 2 (2025) 92 doi: 10.36922/an.5661