Checklist for Autism in Toddlers Third Edition（CHAT-3）for Chinese Children – Hong Kong Study

Checklist for Autism in Toddlers Third Edition(CHAT-3) for Chinese Children Hong Kong Study Principle Investigator: Prof virginia Wong Co-Investigators: Dr Cheuk-Wing Fung Dr Brian Hon-yin Chung Dr Wing-Cheong Lee Dr Joy lok-Sum Leung Ms Nancy I sang Ms stella hui

Checklist for Autism in Toddlers Third Edition (CHAT-3) for Chinese Children – Hong Kong Study Principle Investigator: Prof Virginia Wong Co-Investigators: Dr Cheuk-Wing Fung Dr Brian Hon-Yin Chung Dr Wing-Cheong Lee Dr Joy Lok-Sum Leung Ms Nancy Tsang Ms Stella Hui

Research background (1) Autistic disorder affects 5-30 in 10,000 of population most beneficial intervention: early and intensive special education

Research Background (1) • Autistic disorder affects 5-30 in 10,000 of population • most beneficial intervention : early and intensive special education

Research Background(2) Checklist for Autism in Toddlers A screening tool for prospective identification of autistic cases at 18 months of age Baron-Cohen 1992) Modif ied Checklist for autism in toddlers Robins et al (2001)) 18 to 24-months of age

Research Background (2) • Checklist for Autism in Toddlers – A screening tool for prospective identification of autistic cases at 18- months of age (Baron-Cohen 1992) • Modified Checklist for Autism in Toddlers (Robins et al (2001) ) – 18 to 24-months of age

Research background(3) Symbolic Play Test(Second Edition)to estimate the mental age an ad junctive tool to understand development of subjects 4 separate situations subject is allowed to play with the standard sets of miniature toys with minimal prompting

Research Background (3) • Symbolic Play Test (Second Edition) to estimate the mental age – an adjunctive tool to understand development of subjects – 4 separate situations – subject is allowed to play with the standard sets of miniature toys with minimal prompting

Objectives (1) To test the validity and reliability(internal consistency and inter-rater reliability)of the new CHaT-3 in Chinese children in Hong Kong any items that can best discriminate the autistic development will be sought To determine the most suitable cut-off criteria and risk stratification from the graduated scores of chat-3

Objectives (1) • To test the validity and reliability (internal consistency and inter-rater reliability) of the new CHAT-3 in Chinese children in Hong Kong • Any items that can best discriminate the autistic development will be sought • To determine the most suitable cut-off criteria and risk stratification from the graduated scores of CHAT-3

Objectives(2) To examine the utility of CHat, M-CHAT and CHAT-3 Consistency and accuracy between the three screening tools To test the applicability of Symbolic Play Test in the Chinese population in determining the mental maturity of children To explore the possibility of CHat-3 for population-wide or targeted high risk group screening

Objectives (2) • To examine the utility of CHAT, M-CHAT and CHAT-3 • Consistency and accuracy between the three screening tools • To test the applicability of Symbolic Play Test in the Chinese population in determining the mental maturity of children • To explore the possibility of CHAT-3 for population-wide or targeted high risk group screening

Study method and Procedure Cross-Sectional Subject: Chinese population Children aged between 18 months and 6 years In the fieldtrips up to 19/06, we have interviewed 109 children Normal nurseries: 31 EETC(Heep Kong Society ): 78 (Among the 109 children, the demographic data of 17 children is not available)

Study method and Procedure: • Cross-Sectional • Subject: – Chinese population – Children aged between 18 months and 6 years old – In the fieldtrips up to 19/06, we have interviewed 109 children. – Normal nurseries: 31 – EETC (Heep Kong Society): 78 – (Among the 109 children, the demographic data of 17 children is not available)

Study method and Procedure: Method Written consent obtained before the interview Demographic data Self-administered Part a questionnaire Tests 1. Checklist for autism in toddlers 3rd edition (CHAT-3) 2. Symbolic Play Test 3. Reynell 4. The Functional Independence Measure(WeeFIM) Ie conducted tests 1-3 in the children of normal nursery(as the parents are present ), and conducted all the 4 tests in the children of eeto

Study method and Procedure: • Method – Written consent obtained before the interview – Demographic data – Self-administered Part A questionnaire – Tests: 1. Checklist for Autism in Toddlers 3rd Edition (CHAT-3) 2.Symbolic Play Test 3. Reynell 4.The Functional Independence Measure (WeeFIM) – We conducted tests 1-3 in the children of normal nursery (as the parents are present), and conducted all the 4 tests in the children of EETC

Study method and Procedure Schedule: 29/4-First meeting and interview 2875-Briefing session 28-29/5-15t field trip (Port land Street) 6/6-Workshop: training and inter-rater correlation

Study method and Procedure • Schedule: – 29/4- First meeting and interview – 28/5- Briefing session – 28-29/5-1 st field trip (Portland Street) – 6/6- Workshop: training and inter-rater correlation

Study method and Procedure Schedule 10/6- Toys collection, inter-rater correlation 11-25/6-Field trip and data entry 17//6-mid-evaluation and inter-rater correlation 21-27/6-Data analysis 27/6-Presentation

Study Method and Procedure • Schedule – 10/6- Toys collection, inter-rater correlation – 11-25/6- Field trip and data entry – 17/6- mid- evaluation and inter-rater correlation – 21-27/6- Data analysis – 27/6- Presentation