Thesis

80 Chapter 4 gradual realization that participants had inadequate proficiency in the Dutch language and that they experienced severe parental psychopathology hindering the continuation of the intervention. The majority of the participating parents was Dutch; one mother was Korean and one mother was Belgian. See Table 2 below for more details on characteristics of each parent-child dyad. Most of the children (5) showed clinical signs of a neurodevelopmental vulnerability, as measured by the CoSoS. Concerns regarding the child’s development were either expressed by parents and/or a preventive care physician. Statistical analyses Within the context of this exploratory pilot study and due to the small sample size (N=6) and limited number of data point (T1 and T2) only descriptive statistics will be reported. Descriptive statistics provide a good initial impression of the data and the progress of individual participants. Results First, the results of pilot testing the BEAR intervention in a small sample (n=6) will be discussed. Second, at the end of the result section, we will discuss our “lessons learned” during pilot testing and discuss the adaptations made for the upcoming RCT study. Participants Baseline characteristics In total, data of six child-parent dyads were included in the pilot study. Table 2 provides a detailed overview per child-parent dyad. At baseline, all children showed concerns regarding ASD, as measured by the ADOS-2. Specifically, mild to moderate concerns existed for child 1 Table 2. Family characteristics and baseline measures Age at baseline (months) CoSoS Sex Bayley-III Index score Bayley-III Developmental age (months) ADOS-2 Toddler module Total score Vineland Adaptive functioning (months) Child 1 13 8 Boy 87 11 11 9 Child 2 15 8 Boy 72 11 18 10 Child 3 29 6 Girl 72 20 17 11 Child 4 22 4 Boy 77 16 11 17 Child 5 23 4 Boy 72 15 15 17 Child 6 28 2 Boy 77 23 13 17

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