Table 3. Correlations (r) Between Home EF and PI and YGTSS Scores at Weeks 2 and 3.

	Week 2 YGTSS Week 1 clinic direct observation	Week 3 YGTSS Week 2 clinic direct observation
EF (motor) – YGTSS motor frequency subscale	.07	.26
PI (motor) – YGTSS motor frequency subscale	.08	.25
EF (vocal) – YGTSS vocal frequency subscale	.58*	.45*
PI (vocal) – YGTSS vocal frequency subscale	.58*	.44*
EF (motor and vocal) – YGTSS severity score	−.13	−.15
PI (motor and vocal) – YGTSS severity score	−.10	−.26

^*p < .05.

EF  =  event frequency; PI  =  partial interval; YGTSS  =  Yale Global Tic Severity Scale.