Table 4.

Correlation between the developmental quotient (DQ) and age at symptom onset, age at diagnosis, and lead time to diagnosis.

DQ		Age at symptom onset	Age at diagnosis	Lead time to diagnosis
Pre-diagnostic evaluation	Pre-first	0.048	−0.283	−0.305
	Pre-second	0.279	−0.104	−0.237
Diagnostic evaluation	Diagnosis	0.247	−0.086	−0.266
Post-diagnostic evaluation	Post-first	0.438*	0.225	−0.141
	Post-second	0.619*	0.278	−0.188

Significant correlation: *p < 0.05.

Pre-first, first pre-diagnostic evaluation; pre-second, second pre-diagnostic evaluation; post-first, first post-diagnostic evaluation; post-second, second post-diagnostic evaluation.