. 2015 Feb 28;15:18. doi: 10.1186/s12877-015-0015-2

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
		Young (N = 28)	Old (N = 25)	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
Driving speed [km/h] (SD)	Night	82.1 (2.4)	79.5 (3.8)	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
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
Driving speed variance [km/h] (SD)	Night	4.0 (5.4)	20.0 (26.4)	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
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
Lane-keeping [degree] (SD)	Night	0.5 (0.3)	0.9 (0.4)	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
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
Lane-keeping variance [degree] (SD)	Night	0.2 (0.2)	0.7 (1.1)	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

η² refers to partial η².