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. 2010 May 4;40(12):1447–1458. doi: 10.1007/s10803-010-1004-0

Table 2.

Summary of measures and blinding

Measures Time Approach Informant Blind to group status at endpoint?
BL EP Administation Coding
Primary outcome measures
 MacArthur N-CDI language × × Parent report Parent(s) No –
 ADOS (item A1) × × Clinical observation Psychologist No Yes (89%)
Secondary outcome measure
 CGI-I – × Rating scale Psychologist – Yes (100%)
Mediating outcome measures
 Erickson child scales × × Video observation Student/junior psychologist Yes (100%) Yes (100%)
 MacArthur N-CDI gestures × × Parent report Parent(s) No –
 ADOS (subscales) × × Clinical observation Psychologist No Yes (89%)
 Erickson parent scales × × Video observation Student/junior psychologist Yes (100%) Yes (100%)

Note. BL = baseline; EP = endpoint; ADOS = Autism Diagnostic Observation Schedule (Lord et al. 2001); N-CDI = Dutch version of the MacArthur Communicative Development Inventory (Fenson et al. 1993; Zink and Lejaegere 2002); CGI-I = Clinical Global Impression-Improvement scale (Guy 1976)