Table 2 Comparison of VIPER functional performance with and without correction

With correction Without correction p-value
Detection distance, m (mean ± SD) 117.6 ± 39.3 40.8 ± 44.3 <.001
*True detection rate, % 98.9 ± 4.2 73.3 ± 36.3 <.001
†False detection rate, % (mean ± SD) 34.7 ± 17.8 24.8 ± 26.6 .084
Identification distance, m (mean ± SD) 21.6 ± 6.7 7.6 ± 7.4 <.001
Accuracy, % (mean ± SD) 83.5 ± 18.1 27.9 ± 37.2 <.001
IEDs
Detection distance, m (mean ± SD) 29.9 ± 8.21 13.19 ± 13.6 <.001
True detection rate, % 59.5 ± 17.8 22.2 ± 24.8 <.001
False detection rate, % (mean ± SD) 67.5 ± 19.9 46.1 ± 41.0 .008
Identification distance, m (mean ± SD) 32.2 ± 6.17 7.43 ± 10.25 <.001
Accuracy, % (mean ± SD) 46.67 ± 20.60 11.39 ± 17.30 <.001
1. $$\ast \mathrm{True}\ \mathrm{detection}\ \mathrm{rate}=\frac{\mathrm{Correctly}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}}{6\ \mathrm{sets}\ \mathrm{of}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}}$$
2. $$\dagger \mathrm{False}\ \mathrm{detection}\ \mathrm{rate}=\frac{\mathrm{Falsely}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}}{\left(\mathrm{Correctly}\ \mathrm{detected}+\mathrm{Falsely}\ \mathrm{detected}\ \mathrm{road}\ \mathrm{signs}\ \mathrm{or}\ \mathrm{IEDs}\right)}$$ 