Table 5:

Subgroup effect sizes across DCD-Q subdomains/items, measures-based impairment categories (SCI and RB severity), and parent-reported delay categories (Cognitive, Language, and Functional delays).

DCD score type	SCI category	RB category	Cognitive delay category	Language delay category	Functional delay category
Effect sizes using the total DCD-Q score
Total (Q01 to Q15)	1.11	1.01	0.89	0.60	1.36
Effect sizes using the standard subdomains (CDM, FM, GC)
CDM (Q01 to Q06)	1.07	0.83	0.75	0.54	1.08
FM (Q07 to Q10)	0.76	0.88	0.99	0.80	1.22
GC (Q11 to Q15)	0.88	0.84	0.46	0.15	1.01
Effect sizes using the factor analysis-based subdomains (CDM1, CDM2, FM, GC1, GC2)
CDM1 (Q01 to Q03)	0.86	0.71	0.54	0.57	0.91
CDM2 (Q04 to Q06)	1.02	0.77	0.77	0.39	0.99
FM (Q07 to Q10)	0.76	0.88	0.99	0.80	1.22
GC1 (Q11 to Q13)	0.90	0.71	0.55	0.28	1.14
GC2 (Q14 to Q15)	0.55	0.70	0.18	−0.07	0.46
Effect sizes using the DCD-Q items
Q01. Throw	0.84	0.51	0.48	0.42	0.79
Q02. Catches	0.72	0.72	0.45	0.47	0.79
Q03. Hits	0.73	0.68	0.51	0.62	0.82
Q04. Jumps	0.82	0.70	0.56	0.25	0.77
Q05. Runs	0.79	0.51	0.40	0.06	0.65
Q06. Plans	0.97	0.75	0.98	0.71	1.05
Q07. Writes fast	0.70	0.66	0.89	0.67	1.05
Q08. Writes legibly	0.46	0.66	0.83	0.66	0.99
Q09. Effort pressure	0.69	0.90	0.74	0.56	0.94
Q10. Cuts	0.76	0.82	0.86	0.80	1.13
Q11. Likes sports	0.81	0.42	0.41	0.20	0.70
Q12. Learning new	0.68	0.55	0.46	0.25	0.82
Q13. Quick competent	0.63	0.77	0.42	0.21	1.14
Q14. Bull in a china shop	0.51	0.64	0.20	0.09	0.45
Q15. Fatigues easily	0.42	0.54	0.10	−0.19	0.30

SCI: Social Communication Impairment, RB = Repetitive Behaviors, CDM: Control During Movement, FM: Fine Motor, GC: General Coordination. Effect sizes ≥0.8 or ≤−0.8 (large) are highlighted in green and 0.5 to 0.8 or −0.5 to −0.8 (moderate) are highlighted in gold to show how motor performance (DCD-Q) distinguishes the extreme categories based on other impairments/delays.