Psychometric Properties of the Canadian Little Developmental Coordination Disorder Questionnaire for Preschool Children

Figures & data

TABLE 1.  Mean Scores on Descriptive Data for Children Categorized as At Risk and Typically Developing (n = 353)

	At risk		Typically developing		Total
		Age		Age		Age
Variable	Number	M (SD)	Number	M (SD)	Number	M (SD)
3-year-old children
Boys	80	3.4  (0.3)	23	3.5  (0.3)	103	3.4  (0.3)
Girls	48	3.3  (0.3)	30	3.4  (0.2)	78	3.4  (0.3)
Total	128	3.4  (0.3)	53	3.5  (0.3)	181	3.4  (0.3)
4-year-old children
Boys	70	4.3  (0.3)	29	4.4  (0.3)	99	4.3  (0.3)
Girls	47	4.3  (0.3)	26	4.4  (0.3)	73	4.3  (0.3)
Total	117	4.3  (0.3)	55	4.4  (0.3)	172	4.3  (0.3)
All children
Boys	150	3.8  (0.6)	52	4.0  (0.5)	202	3.9  (0.6)
Girls	95	3.8  (0.6)	56	3.9  (0.6)	151	3.8  (0.6)
Total	245	3.8  (0.6)	108	3.9  (0.5)	353	3.8  (0.6)

TABLE 2.  Factor Loadings by Item

Item	Gross motor factor	Fine motor factor
1. Throw	0.8
2. Catch	0.6
3. Kick	0.7
4. Run	0.8
5. Move place	0.8
6. Drinks		0.6
7. Cutlery		0.6
8. Pencil		0.7
9. Thread		0.8
10. Stickers		0.8
11. Building		0.8
12. Imitate	0.6
13. Playground equipment	0.7
14. Coordination	0.8
15. Sits upright	0.6

TABLE 3.  Mean Little DCDQ Scores by Group, Age, and Gender (n = 119)

	Motor impairment				Non-motor impairment
		Little DCDQ total	Gross motor factor	Fine motor factor		Little DCDQ total	Gross motor factor	Fine motor factor
Variable	n	M (SD)	M (SD)	M (SD)	n	M (SD)	M (SD)	M (SD)
3-year-old children
Boys	11	53.2  (8.9)	31.9  (5.8)	21.2  (4.8)	20	66.6  (6.8)	40.6  (3.9)	25.4  (3.3)
Girls	6	55.4  (10.7)	30.0  (7.1)	22.3  (3.6)	26	65.8  (9.9)	38.3  (7.5)	26.7  (4.1)
Total	17	53.9  (9.2)	31.4  (5.9)	21.5  (4.4)	46	66.2  (8.6)	39.3  (5.0)	26.5  (5.5)
4-year-old children
Boys	10	56.1  (13.4)	32.2  (8.5)	21.2  (6.9)	18	68.6  (9.0)	39.7  (6.2)	26.2  (5.5)
Girls	5	56.8  (16.4)	35.0  (2.8)	23.7  (7.8)	23	64.3  (13.2)	39.2  (7.5)	26.2  (5.5)
Total	15	56.3  (13.9)	33.0  (7.2)	22.1  (6.8)	41	66.2  (11.6)	39.4  (6.9)	26.3  (5.1)
All children
Boys	21	54.6  (11.1)	32.0  (6.5)	21.2  (5.4)	38	67.5  (7.9)	40.2  (5.0)	25.9  (3.9)
Girls	11	56.1  (13.1)	31.7  (6.2)	22.9  (5.2)	49	65.1  (11.5)	38.7  (6.5)	26.4  (4.8)
Total	32	55.1  (11.6)	31.9  (6.3)	21.7  (5.3)	87	66.2  (10.1)	39.3  (5.9)	26.2  (4.4)

TABLE 4.  Discriminant Function Analysis

Item	Structural coefficients
2. Catch	0.8
3. Kick	0.7
12. Imitate	0.7
4. Run	0.7
10. Stickers	0.7
1. Throw	0.6
9. Thread	0.6
14 Coordination	0.5
8. Pencil	0.5
11. Building	0.5
7. Cutlery	0.4
5. Move place	0.4
15. Sits upright	0.4
6. Drinks	0.3
13. Playground equipment	0.3

TABLE 5.  Correlations of Little DCDQ Total and Factor Scores with the MABC-2 and Beery VMI Scores

	MABC-2				Beery VMI
	Total	Manual	Aiming &		VMI	Motor
	impairment	dexterity	catching	Balance	Integration	coordination
Little DCDQ
Total	0.3^a	0.4^a	0.2^b	0.3^a	0.2^b	0.4^a
Gross motor factor	0.4^a	0.4^b	0.3^a	0.3^a	0.2	0.3^a
Fine motor factor	0.4^a	0.4^a	0.1	0.3^a	0.3^a	0.5^a

^ap < .01 (2-tailed); ^bp < .05 (2-tailed).

FIGURE 1.  Canadian Little DCDQ: ROC curve for boys.

FIGURE 2.  Canadian Little DCDQ ROC curve for girls.