Instrument completion rate by time Estimate: NIS-Child questionnaire redesign study (time estimate in minutes)a								Significancef
	Control (20 or 15 minutes)	Early engagement (15 minutes)	Late engagement (15 minutes)	Short (10 minutes)	b	c	d	e
Resolution rate	53.54%	53.89%	53.68%	54.05%	n.s.	n.s.	n.s.	n.s.
Screener completion rate	78.04%	77.77%	78.10%	77.82%	n.s.	n.s.	n.s.	n.s.
Interview completion rate	75.05%	80.22%	81.83%	86.38%	0.001	0.001	0.001	0.001
CASRO response rate	31.36%	33.62%	34.31%	36.34%	0.05	0.05	0.01	0.001
Percent reduction in HPC	–	8.28%	11.59%	22.30%