Table 7 Multiple Regression Analysis of the Factors Behind Violations/Dangerous Driving Styles of People with Schizophrenia (N = 20).

From: Characteristics of real-world driving behavior in people with schizophrenia: a naturalistic study utilizing drive recorders

Dependent Variable

Independent Variable

β (SE)

95% CI

p-value

Factor 1a) (Speed violation)

Average maximum speed per trip

1.663 (0.582)

0.436–2.886

0.01

Factor 2b) (Inattention violation)

Continuous performance test: Reaction time

−83.928 (68.8)

−22.16–9.344

0.56

Useful field of view

−1.315 (0.788)

−3.472–0.144

0.03

Sudden brakingc)

Continuous performance test: Correct answer rate

−9.04 (6.832)

−23.02–5.399

0.203

Drug-Induced Extrapyramidal Symptoms Scale

3.528 (1.424)

0.522–0.653

0.024

  1. Factor 1: Speeding (>20 km/h), Speeding (>30 km/h), and Sudden steering.
  2. Factor 2: Running red lights, ignoring stop signs, lane departures, and traffic violations occurring within intersections.
  3. (a) Adjusted R²; .272 F-statistic; 8.125, (b) Adjusted R²; .198 F-statistic; 3.335, (c) Adjusted R²;.201 F-statistic; 7.327. Bold values indicate statistical significance.
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