Translation and validation of the developmental, dimensional and diagnostic interview (3Di) for diagnosis of autism spectrum disorder in Thai children.
The 3Di-Thai short form works like the English version—use the same cut-offs (10/8/3) for diagnosis.
01Research in Context
What this study did
The team translated the short 3Di autism interview into Thai.
They then checked if the Thai version could tell apart kids with ASD from typically developing kids.
Parents answered the same questions used in the English form.
What they found
The short 3Di-Thai picked out ASD children with moderate to good accuracy.
The best cut-off scores were the same as in English: 10 for reciprocal social interaction, 8 for communication, and 3 for repetitive behaviors.
How this fits with other research
Demello et al. (1992) warned that older DSM-III-R criteria over-diagnose autism. The 3Di-Thai avoids this by sticking to stricter DSM-IV items.
Oliver et al. (2002) showed Indian clinicians mostly agree on core autism features. The 3Di-Thai gives Thai clinicians a structured way to apply those same features.
Murray et al. (2014) caution that diagnosed-only samples can hide true symptom links. Jariya et al. solved this by including both ASD and neurotypical kids.
Why it matters
If you assess Thai-speaking children, you can now use the short 3Di-Thai with confidence. Use the same cut-offs you already know from English manuals. This saves time, keeps your diagnosis in line with international practice, and gives families clear answers faster.
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02At a glance
03Original abstract
This study aimed to examine the effectiveness of a translated version of the short version of the Developmental, Dimensional and Diagnostic Interview (3Di) in discriminating children with autism spectrum disorders (ASDs) from typically developing children. Two groups, comprising 63 children with clinically ascertained ASDs and 67 typically developing children, were interviewed with the short 3Di translated version. Mean 3Di scale scores in each domain of autistic symptoms (social reciprocity, communication, and repetitive/stereotyped behaviors) were significantly higher in the ASD group than in the typically developing group. The optimal receiver operating characteristics curve cut-off scores were found to be 10, 8, and 3 for social reciprocity domain, communication domain, and repetitive/stereotyped behaviors domain, respectively, which are identical to the original English standardization. Corresponding sensitivities and specificities were 76.2% and 80.9% for the social reciprocity domain; 85.7% and 73.5% for the communication domain; and 66.7% and 80.9% for the repetitive behaviors domain. The areas under the curve were 0.89 (95% CI = 0.84-0.94), 0.88 (95% CI = 0.82-0.94), and 0.79 (95% CI = 0.71-0.87), respectively. The short 3Di-Thai version is found to be a useful diagnostic instrument for differentiating between clinically diagnosed children with ASDs and typically developing children, although further replication is needed.
Autism : the international journal of research and practice, 2012 · doi:10.1177/1362361311433770