Table 4.

Multivariate linear regression for change in UMAT-3 score from first sit to second sit (N = 17,089, r² = 0.270)

Predictor variable ( reference group in brackets )	N	B (95% CI)	Beta	P-value
UMAT-3 Score Percentile Test 1	17089	-0.49 (-0.50, -0.48)	-0.525	<0.001
Number of years between tests	17089	-3.13 (-3.44, -2.82)	-0.130	<0.001
Age (≤ 16 yr of age)	222
17 yr	5958	0.11 (-2.83, 3.06)	0.002	0.939
18 yr	7209	-1.09 (-4.03, 1.85)	-0.021	0.467
19 yr	1682	-6.33 (-9.44, -3.22)	-0.073	<0.001
20 - 30 yr	1749	-9.72 (-12.80, -6.63)	-0.115	<0.001
>30 yr	269	-11.99 (-15.93, -8.06)	-0.058	<0.001
Gender (Females)	9463
Males	7626	3.65 (2.98, 4.33)	0.071	<0.001
Language spoken at home (English)	10726
Asian Languages	5611	-0.54 (-1.27, 0.19)	-0.010	0.145
European Languages	349	-3.28 (-5.63, -0.93)	-0.018	0.006
Other Languages	403	-4.40 (-6.59, -2.20)	-0.026	<0.001
School type (Government)	8911
Catholic	2565	-1.61 (-2.60, -0.62)	-0.022	0.001
Independent	5102	1.01 (0.22, 1.80)	0.018	0.012
Other	84	-3.28 (-5.43, -1.14)	-0.020	0.003
TAFE	427	-3.94 (-8.72, 0.84)	-0.011	0.106
Country (Australia)	12522
New Zealand	4436	1.89 (1.07, 2.72)	0.032	<0.001
Other Country	131	3.06 (-0.74, 6.86)	0.010	0.114
Aboriginal & Torres Strait Islander (ATSI)	17044
Non-ATSI	45	-5.25 (-11.68, 1.19)	-0.010	0.110

(Significant P-values are boldfaced).