Table 6 Group differences and effect of age, light and interaction of light x age on driving performance (measured on a straight stretch)
Young(N = 28) | Old(N = 25) | Significance | ||||
|---|---|---|---|---|---|---|
Age | Light | Light x Age | ||||
Driving speed [km/h] (SD) | Day | 82.0 (2.4) | 78.5 (3.1) | F(1,51) = 18.8 p < 0.001 η2 = 0.269 | F(1,51) = 2.1 p = 0.162 η2 = 0.038 | F(1,51) = 1.2 p = 0.278 η2 = 0.023 |
Night | 82.1 (2.4) | 79.5 (3.8) | ||||
Driving speed variance [km/h] (SD) | Day | 2.4 (2.5) | 12.7 (12.5) | F(1,51) = 30.4 p < 0.001 η2 = 0.373 | F(1,51) = 2.8 p = 0.099 η2 = 0.052 | F(1,51) = 1.2 p = 0.279 η2 = 0.023 |
Night | 4.0 (5.4) | 20.0 (26.4) | ||||
Lane-keeping [degree] (SD) | Day | 0.4 (0.2) | 0.7 (0.3) | F(1,51) = 19.2 p < 0.001 η2 = 0.274 | F(1,51) = 10.4 p = 0.002 η2 = 0.169 | F(1,51) = 1.5 p = 0.229 η2 = 0.028 |
Night | 0.5 (0.3) | 0.9 (0.4) | ||||
Lane-keeping variance [degree] (SD) | Day | 0.2 (0.1) | 0.6 (0.7) | F(1,51) = 13.4 p = 0.001 η2 = 0.209 | F(1,51) = 0.8 p = 0.384 η2 = 0.015 | F(1,51) = 0.1 p = 0.705 η2 = 0.003 |
Night | 0.2 (0.2) | 0.7 (1.1) | ||||