Difference between revisions of "STAT"
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* Description | * Description | ||
| − | The Screening Tool for Autism in Two Year Olds was developed as an interactive, play based secondary screening tool that is composed of 12 activities assessing social-communicative behaviors. The STAT was initially developed and validated for children between 24-36 months, but there have also been studies that suggest that this tool is appropriate for children under 2 as well. | + | The Screening Tool for Autism in Two Year Olds was developed as an interactive, play based secondary screening tool that is composed of 12 activities assessing social-communicative behaviors. The STAT was initially developed and validated for children between 24-36 months<sup>1</sup>, but there have also been studies that suggest that this tool is appropriate for children under 2 as well. It should take less than 20 minutes to administer. The STAT has 2 play items, four imitation items, four directing attention items, and two requesting items. Requesting items are not included in the scoring system because they were included to promote interaction, not to differentiate between those with ASD and those without ASD.<sup>1</sup> |
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| + | Items on the STAT are developmentally sensitive and may not be appropriate for screening at older ages because children with autism are likely to acquire the skills that are looked at on the STAT.<sup>1</sup> | ||
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====Scoring==== | ====Scoring==== | ||
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| + | Based on the sample, a score of less than 2 is designated as failing for each area. Children failing any two of three areas should be referred for further diagnostic testing. | ||
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====Psychometrics (validity and reliability)==== | ====Psychometrics (validity and reliability)==== | ||
| − | In an initial validation study of STAT, showed that the instrument performed well at distinguishing between autism and non-autistic populations. However, it was less accurate at distinguishing autism from PDD-NOS. | + | In an initial validation study of STAT, showed that the instrument performed well at distinguishing between autism and non-autistic populations. However, it was less accurate at distinguishing autism from PDD-NOS. The tool had a sensitivity of 0.83 and a specificity of 0.86 in the validation sample. |
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| + | In one exploratory study for using the STAT as a second level screening tool for children under 24 months, using a cut off score of 2.75 gave a sensitivity of 0.95 and a specificity of 0.73 with a positive predictive value of 0.56 and a negative predictive value of 0.97.<sup>2</sup> | ||
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=====References===== | =====References===== | ||
| + | 1. Stone et. al. ''Brief report: screening tool for autism in two-year-olds (STAT): development and preliminary data.''J Autism Dev Disord. 2000 Dec;30(6):607-12. PMID 11261472 | ||
| − | + | 2. Stone et. al. ''Use of the Screening Tool for Autism in Two-Year-Olds (STAT) for children under 24 months: an exploratory study.'' Autism. 2008 Sep;12(5):557-73. PMID 18805947 | |
==== Related Information ==== | ==== Related Information ==== | ||
Revision as of 14:30, 27 July 2009
Contents
STAT
Basic Characteristics
- Description
The Screening Tool for Autism in Two Year Olds was developed as an interactive, play based secondary screening tool that is composed of 12 activities assessing social-communicative behaviors. The STAT was initially developed and validated for children between 24-36 months1, but there have also been studies that suggest that this tool is appropriate for children under 2 as well. It should take less than 20 minutes to administer. The STAT has 2 play items, four imitation items, four directing attention items, and two requesting items. Requesting items are not included in the scoring system because they were included to promote interaction, not to differentiate between those with ASD and those without ASD.1
Items on the STAT are developmentally sensitive and may not be appropriate for screening at older ages because children with autism are likely to acquire the skills that are looked at on the STAT.1
- History
Scoring
Based on the sample, a score of less than 2 is designated as failing for each area. Children failing any two of three areas should be referred for further diagnostic testing.
Psychometrics (validity and reliability)
In an initial validation study of STAT, showed that the instrument performed well at distinguishing between autism and non-autistic populations. However, it was less accurate at distinguishing autism from PDD-NOS. The tool had a sensitivity of 0.83 and a specificity of 0.86 in the validation sample.
In one exploratory study for using the STAT as a second level screening tool for children under 24 months, using a cut off score of 2.75 gave a sensitivity of 0.95 and a specificity of 0.73 with a positive predictive value of 0.56 and a negative predictive value of 0.97.2
References
1. Stone et. al. Brief report: screening tool for autism in two-year-olds (STAT): development and preliminary data.J Autism Dev Disord. 2000 Dec;30(6):607-12. PMID 11261472
2. Stone et. al. Use of the Screening Tool for Autism in Two-Year-Olds (STAT) for children under 24 months: an exploratory study. Autism. 2008 Sep;12(5):557-73. PMID 18805947
Related Information
- Indicators (dependent variables, conditions, or contrasts; measurement variables used for analysis) associated with this task (vote or nominate by editing this page):
- Closely related pages (vote or nominate related pages by editing this page):
Other Screening Tools
CHAT
MCHAT
SCQ
CAST
ASSQ
- Primary Species
humans
External Resources
- Links out:
- -ucla cognitive atlas- (coming soon!)
- Database links
