Table 2. Correlates of drowsy driving and witnessed apnea
Question Significance (i.e. p-value)
  Drowsy Driving Witnessed Apneas
Overall Berin Score < 0.0001 < 0.0001
Do you snore? < 0.01 < 0.001
How loud is your snoring? < 0.0001 < 0.0001