Table 3

MANCOVA of psychomotor performances

	Factors		Covariates
Variables	Exposure	Hand	Age	School	Day	Alcohol	Disease	Estimated mean (95% CI)
p≤0.05; p≤0.01; **p≤0.001, F values.
Precision: number of errors, error time:
Steadiness:
Number of errors:
Right	0.3	7.0**	5.7*	2.1	0.2	0.1	5.4*	1.90 (1.67 to 2.12)
Left	0.0	2.1	0.4	1.3	2.1	0.1	6.1*	1.69 (1.45 to 1.93)
Error time:
Right	0.2	4.3*	5.0*	1.6	0.1	0.1	3.6	3.53 (3.19 to 3.88)
Left	0.0	3.9*	0.1	1.1	3.3	0.0	8.3**	3.19 (2.85 to 3.53)
Line tracing:
Number of errors:
Right	0.2	9.6**	0.0	4.5*	0.0	2.6	3.2	3.07 (2.98 to 3.16)
Left	0.0	6.3**	0.6	7.6**	0.0	1.6	2.2	3.03 (2.94 to 3.12)
Error time:
Right	2.9	5.7*	0.1	0.2	0.2	0.4	5.7*	5.20 (5.09 to 5.32)
Left	0.0	12.0***	0.9	4.9*	0.0	0.4	5.9*	5.16 (5.05 to 5.27)
MANCOVA: Precision	1.3	9.0***	1.3	2.0*	0.7	1.7	1.7
Speed: total time, number of hits:
Line tracing:
Total time:
Right	0.5	1.6	2.0	4.3*	1.4	0.2	0.5	7.68 (7.60 to 7.77)
Left	0.0	0.2	2.3	5.7*	0.2	0.0	0.4	7.64 (7.55 to 7.73)
Aiming:
Total time:
Right	1.3	16.0***	24.9***	2.3	3.4	1.2	0.6	6.82 (6.78 to 6.86)
Left	2.3	16.8***	20.4***	3.7	3.4	0.9	1.8	6.73 (6.69 to 6.76)
Tapping:
Number of hits:
Right	1.0	6.6**	4.0*	1.1	0.9	8.0**	2.3	5.30 (5.28 to 5.32)
Left	0.0	30.0***	1.2	2.2	1.7	2.7	0.3	5.27 (5.24 to 5.29)
Peg board:
Total time:
Right	0.7	5.4*	25.8***	0.8	6.6**	0.9	8.1**	8.78 (8.75 to 8.81)
Left	0.6	6.9**	26.2***	0.8	6.6**	0.9	8.0**	8.78 (8.76 to 8.81)
MANCOVA: Speed	0.9	22.7***	4.9***	1.6	1.3	1.9	1.5
MANCOVA: All	1.0	14.1***	3.3***	1.5	1.0	1.8*	1.2