Table 3.

Schedule of enrollment, interventions, and assessments.

Time point					T0a			T1b			IIc			T2d			EIe			T3f
Enrollment
	Eligibility screening			✓
	Informed consent			✓
	Allocation			✓
Interventions
	Index intervention group sessions									✓						✓
	Active control group sessions									✓						✓
	Passive control group sessions
Quantitative assessments
	Primary outcomes
		Child language				✓						✓						✓
		Parental sensitivity and parent-child reciprocity				✓						✓						✓
	Secondary outcomes
		Child attention				✓						✓						✓
		Child behavior				✓						✓						✓
		Parenting				✓						✓						✓
		Parental stress				✓						✓						✓
	Exploratory outcomes
		Child health				✓						✓						✓
	Moderators and selected confounding variables
		Sex of the child	✓
		Socioeconomic situation	✓
		Cognitive abilities of the caregiver				✓
	Qualitative assessments
		Interviews with caregivers				✓						✓						✓
		Focus groups with caregivers										✓
		Focus groups with DBSg and PAh facilitators										✓

^aT0: allocation and enrollment.

^bT1: baseline.

^cII: intensive intervention.

^dT2: post–intensive intervention assessment.

^eEI: extensive intervention.

^fT3: post–extensive intervention assessment.

^gDBS: dialogic book-sharing.

^hPA: playful activity.