Psychometric Properties of the Canadian Little Developmental Coordination Disorder Questionnaire for Preschool Children.

AIMS: Test the psychometric properties and cut-off scores for the Canadian Little Developmental Coordination Disorder Questionnaire (Little DCDQ), which screens for coordination difficulties in children aged 3 to 4 years. METHODS: Parents of children with typical development (n = 108) and children at risk for motor problems (n = 245) completed the questionnaire. A subgroup (n = 119) of children was tested with the Movement Assessment Battery for Children-2 (MABC-2) and the Beery-Buktenica Developmental Test of visual-motor integration (VMI) to determine motor impairment (MI). RESULTS: Test-retest reliability (r = 0.956, p < .001) and internal consistency (Cronbach's alpha = 0.94) were high. Construct validity was supported by a factor analysis and significant difference in scores of children who were typically developing and were at risk. Concurrent validity was evaluated for the children who received standardized motor testing, with significant difference between children with and without MI. Discriminant function analysis showed that all 15 items were able to distinguish the two groups. The questionnaire correlated well with the MABC-2 and VMI. Validity as a screening tool was assessed using logistic regression modeling (X(2)(5) = 25.87, p < .001) and receiver operating curves, establishing optimal cut-off values with adequate sensitivity. CONCLUSIONS: The Little DCDQ is a reliable, valid instrument for early identification of children with motor difficulties.

Cross-cultural adaptation, reliability and predictive validity of the Italian version of Developmental Coordination Disorder Questionnaire (DCDQ).

BACKGROUND: Developmental coordination disorder (DCD) is a motor disorder of unclear etiology that severely interferes with a child's ability to perform daily motor tasks. As a useful alternative to a time-consuming motor test and specialist evaluation, parents or teachers can complete motor questionnaires. A tool used worldwide to screen motor performance in 4- to 14-year-old children is the Developmental Coordination Disorder Questionnaire 2007 (DCDQ'07). AIMS: To describe how we translated the Developmental Coordination Disorder Questionnaire 2007 (DCDQ'07) and adapted it to the Italian population and to test its preliminary psychometric properties in Italian children. METHODS: Parents of a clinical group of 26 children (5-11 years old) with a diagnosis of DCD and 52 matched controls completed the DCDQ translated into Italian and adapted for cross-cultural purposes according to current guidelines. Twenty-four parents of typically developing children randomly selected completed the questionnaire twice to examine test-retest reliability. RESULTS: The internal consistency value (Cronbach alpha) for the Italian DCDQ was 0.94. The Italian DCDQ achieved moderate-to-high test-retest reliability (ICC) for 14/15 items and a good diagnostic performance for identifying children with DCD (sensitivity 88% and specificity 96%). CONCLUSIONS: The Italian DCDQ is a valid screening tool for assessing motor performance in 5- to 11-year-old children that merits research in a larger sample.

Cross-cultural adaptation of the developmental coordination disorder questionnaire 2007 for German-speaking countries: DCDQ-G.

BACKGROUND: The Developmental Coordination Disorder Questionnaire 2007 (DCDQ'07) is widely used internationally and is a useful measure to assist in the diagnosis of developmental coordination disorder. The aim of this study was to translate the DCDQ'07 into German, test the psychometric properties, and establish cutoff scores for the 5.0 to 7.11 age group. MATERIALS AND METHODS: A six-stage cross-cultural adaptation process was used. The psychometric properties of the DCDQ-German (DCDQ-G) were tested with a clinic sample of 55 children (mean age: 6.1 years) and community sample of 67 children (mean age: 5.6 years). RESULTS: The internal consistency was high. Specificity and sensitivity for the total sample were 52.4 and 90%, respectively. Sensitivity for the clinic sample was 72.7% and specificity was 95%. The community sample had a sensitivity of 30% and a specificity of 86.7%. CONCLUSION: The DCDQ-G is a valid instrument for use with a clinic population in the 5.0 to 7.11 age group. Research into older age groups is ongoing.

Development of the Little Developmental Coordination Disorder Questionnaire for preschoolers and preliminary evidence of its psychometric properties in Israel.

PURPOSE: The early identification of motor coordination challenges before school age may enable close monitoring of a child's development and perhaps ameliorate some of the social, psychological and behavioral sequela that often accompany unrecognized Developmental Coordination Disorder (DCD). The purpose of this study was to develop and assess the initial psychometric properties of a screening tool, the Little DCD Questionnaire (Little DCDQ), designed to identify DCD amongst preschoolers aged 3 and 4. METHODS: The suitability of the items of the DCDQ'07 for 3- and 4-year-old children was assessed. Four items were found to be suitable and new items were generated. Content validity was ensured using a Table of Specification and the items were categorized into three sub-categories (Control During Movement, Fine Motor and General Coordination). The Little DCDQ was administered to 146 children (91 boys) aged 3 and 4 (mean age=49.39±7.16 months). Ninety-one typically developing children were included (mean age=47.80±7.05 months; 46 boys) while 55 children had been referred or were being treated for some form of developmental delay (mean age=52.02±6.60 months; 45 boys). Of this sample, 28 parents completed the questionnaire twice within a 2-week interval. RESULTS: Test-retest reliability was evidenced by moderate to good intraclass correlation coefficient values between scores on the two administrations for the total and the three sub-category scores. Evidence of internal consistency was provided by adequate to high Cronbach's alpha co-efficients calculated for each item, each sub-category score and the total score for the total group, and separately for the control group and the clinically referred group. Validity evidence based on relations to other variables was provided by the finding of significant group differences (clinically referred and control) for the total and sub-category scores for both the age groups and the total group. CONCLUSIONS: Based on the preliminary psychometric evidence, it appears that the Little DCDQ meets many of the necessary standards for validity and reliability as a screening instrument, and shows promise as a useful clinical and research tool.

Assessment of developmental coordination disorder in children born with extremely low birth weights.

There is no tool that is considered the "gold" standard for identifying children with developmental coordination disorder (DCD) and various techniques have been reported in the research literature. The aim of this study was to examine the prevalence of DCD in a cohort of extremely low birth weight (ELBW; birth weight ≤ 1,000g) children at age 5 years using various methods including standardized motor assessment measures, an established clinic protocol, and a parent report. We also examined the association between selected neonatal risk factors and severity of the motor impairment. Four methods were used to assess motor functioning: (1) the Movement Assessment Battery for Children (Movement ABC); (2) a motor assessment battery, which included the Movement ABC, the Beery-Buktenica Developmental Test of Visual Motor Integration, and the Developmental Test of Visual Perception-2; (3) a Perinatal Follow-up Clinic protocol, which included the Geometric Design and the Mazes subtests of the Wechsler Preschool and Primary Scale of Intelligence-Revised, the Fine and Gross Motor subscales of the Child Development Inventory, and a pediatric neuromotor exam; and (4) a parent completed questionnaire (i.e., Developmental Coordination Disorder Questionnaire (DCDQ)). The prevalence of motor impairment in ELBW children was 64% on the Movement ABC, 67% on the motor assessment battery, 66% on the Perinatal Follow-up Clinic protocol, and 26% on the DCDQ. Sensitivity ranged from 36% to 100% and specificity from 65% to 92% using the Movement ABC as the reference standard. Neonatal risk factors associated with increased severity of motor impairment were bronchopulmonary dysplasia, postnatal steroids, and increasing gestational age. Children with birth weights ≤ 1,000 g are at considerable risk for motor impairment; therefore, developmental evaluations should include an assessment of motor functions. A standardized motor assessment test such as the Movement ABC appears to be the most effective and efficient means of identifying motor impairment in this high-risk population.

French Canadian cross-cultural adaptation of the Developmental Coordination Disorder Questionnaire '07: DCDQ-FC.

BACKGROUND: Parent-report measures, such as the Developmental Coordination Disorder Questionnaire'07 (DCDQ'07), are used to identify developmental coordination disorder (DCD) in children. Early identification of this condition is important to mitigate its social-emotional and health consequences. Unfortunately, few French-language assessments are available to therapists working with francophone populations. PURPOSE: The aim of this study was to undertake a formal translation of the English DCDQ'07 and begin to examine its psychometric properties. METHODS: The translation was done using Beaton, Bombardier, and Guillemin's (2000) guidelines for cross-cultural adaptation. Methodologies described by Haccoun (1987) and Vallerand (1989) were used to address the psychometric qualities of the translation. FINDINGS: The DCDQ'07 and its French translation (DCDQ-FC) are equivalent, with excellent internal consistency and test-retest reliability. Concurrent and construct validity were adequate for a screening measure; however, low sensitivity was obtained with both measures. IMPLICATIONS: The DCDQ-FC is a valid translation for use with a French Canadian population.

Psychometric properties of a Chinese version of the Developmental Coordination Disorder Questionnaire in community-based children.

The aim of this study was to adapt and evaluate the Developmental Coordination Disorder Questionnaire (DCDQ) for use in Chinese-speaking countries. A total of 1082 parents completed the DCDQ and 35 parents repeated it after 2 weeks for test-retest reliability. Two items were deleted after examination of test consistency. Cronbach's alpha for the total score was 0.89 and test-retest reliability was 0.94. Exploratory and confirmatory factor analyses showed this version to be compatible with the original and two adaptations of the DCDQ. One-way ANOVA and the post hoc tests revealed that the non-DCD group scored significantly higher than the DCD group and the suspect DCD group, but the latter two did not differ significantly. Sensitivity and specificity of the DCDQ were 73% and 54%. The estimated area under the Receiver Operating Characteristic curve was 0.68. Compared to the dichotomized grouping in assessing sensitivity and specificity, which provides clinicians with all or none information about a child's probability of being DCD, the informative conditional effect plot could alert clinicians to the child with less conspicuous movement problems. This adaptation of the DCDQ could be used for identifying motor coordination problems in Chinese-speaking societies.

Connecting children to recreational activities: results of a cluster randomized trial.

PURPOSE: Identify if outreach support increases school-aged children's participation in recreational activities. DESIGN: Cluster randomized trial. SETTING: Sixteen schools in economically vulnerable neighborhoods were randomized to either an intervention or control group. SUBJECTS: Children in grades 3 to 5 and their families were invited to participate. INTERVENTION: Children in intervention schools were assigned a "connector" (outreach worker) to facilitate participation in recreation activities. MEASURES: The Children's Assessment of Participation and Enjoyment (CAPE) was the primary measure at baseline, middle, and end of 1 year. Demographics, body mass index, child physical and psychosocial health, coordination, and self-esteem were measured. ANALYSIS: A generalized linear model was used to test differences between intervention and control groups. RESULTS: Three hundred and sixty children enrolled, and 306 (85%) completed the study. A greater proportion of children in the intervention group compared with the control group increased participation in physical activity (21% vs. 10%, p = .02). Children who increased their activity were more likely to have higher levels of contact with the connectors (31% vs. 8%, p = .001). Study limitations included (1) 29% of eligible families participated, (2) first use of the CAPE instrument as a longitudinal measure, and (3) connectors were not blinded to group assignment. CONCLUSION: Children living in vulnerable neighborhoods benefit from outreach workers to connect them with physical activity programs.

Functional performance of children with developmental coordination disorder at home and at school.

This study investigated the functional performance of daily activities at home and at school in a population-based sample of children with different degrees of motor coordination impairment and competence. Sixteen children (seven males, nine females; mean age 8 y, SD 9 mo) with developmental coordination disorder (DCD), 25 with suspected DCD ([sDCD] 17 males, eight females; mean age 7 y 6 mo, SD 8 mo), and 63 children without motor problems (39 males, 24 females; mean age 7 y 9 mo, SD 7 mo) were recruited from public schools (Grades 1-3, age 6 y 4 mo-9 y 10 mo) using the Chinese version of the Developmental Coordination Disorder Questionnaire, the Movement Assessment Battery for Children, and the Bruininks-Oseretsky Test of Motor Proficiency. Functional performance was assessed using the Chinese versions of the Vineland Adaptive Behavior Scales and the School Function Assessment-Chinese version. The functional performance of children with DCD and sDCD was statistically significantly lower than those without DCD (p's<0.05). chi(2) and logistic regression analyses showed significant differences among all groups in the proportion of children scoring at the 'inadequate' adaptive level of home performance (p's<0.05). There were also significant differences among the groups in the proportion of children scoring below the cut-off in school performance (p's<0.05). The findings show the pervasive impact of DCD on children's functional performance in daily activities at home and at school.

Psychometric properties of the revised Developmental Coordination Disorder Questionnaire.

The Developmental Coordination Disorder Questionnaire (DCDQ) is a parent-completed measure designed to identify subtle motor problems in children of 8 to 14.6 years of age. The purpose of this study was to extend the lower age range to children aged 5 to 7 years, revise items to ensure clarity, develop new scoring, and evaluate validity of the revised questionnaire. Additional items with improved wording were generated by an expert panel. Analyses of internal consistency, factor loading, and qualitative/quantitative feedback from researchers, clinicians, and parents were used to select 15 items with the strongest psychometric properties. Internal consistency was high (alpha = .94). The expanded questionnaire was completed by the parents of 287 children, aged 5-15 years, who were typically developing. Logistic regression modeling was used to generate separate cutoff scores for three age groups (overall sensitivity = 85%, specificity = 71%). The revised DCDQ was then compared to other standardized measures in a sample of 232 children referred for therapy services. Differences in scores between children with and without DCD (p < .001) provide evidence of construct validity. Correlations between DCDQ scores and Movement Assessment Battery for Children (r = .55) and Test of Visual-Motor Integration (r = .42) scores support concurrent validity. The results provide evidence that the revised DCDQ is a valid clinical screening tool for DCD.

The importance of parent and child opinion in detecting change in movement capabilities.

BACKGROUND: Children and parents can make valid judgments about movement difficulties, which aids in the screening and assessment of Developmental Coordination Disorder (DCD). When considering therapy outcomes, child and family-centred practice supports the inclusion of parent and child perspectives to reflect progress made in meaningful daily contexts. PURPOSE: This paper describes an evaluation of the use of questionnaires for parents and children to measure change in motor performance. METHODS: Questionnaires were administered to 43 children with DCD and their parents five times over two-anda-quarter years in conjunction with other clinical measures. FINDINGS: Parent report, using the Developmental Coordination Disorder Questionnaire, correlated significantly with clinical measures of motor skill, whilst parent and child perceptions differed. Children's confidence and resilience may influence their opinions of their ability. IMPLICATIONS: These results raise questions of whose perspective of progress is most valid and relevant - the therapist's, child's or parent's?

Evaluation of the Developmental Coordination Disorder Questionnaire as a screening instrument.

Reliability and validity of the Developmental Coordination Disorder Questionnaire (DCD-Q) was assessed using a population-based sample of 608 children (311 males, 297 females; mean age 7 y 8 mo [SD 2 y 4 mo]), a sample of 55 children with DCD referred to a rehabilitation clinic, and a control sample of 55 children matched for age and sex (48 males, seven females in each sample; mean age 8 y 3 mo [SD 2 y]). The DCD-Q is reliable and valid in the age range for which the questionnaire was developed(8 y-14 y 7 mo) and in a younger age range (4-8 y). Sensitivity and specificity of the DCD-Q was assessed using the Movement Assessment Battery for Children as the criterion standard. The DCD-Q met the standard for sensitivity (80%) in the clinic-referred sample (81.6%), but not in the population-based sample (28.9%). Specificity almost reached the standard of 90%: 89% in the population-based sample and 84% in the clinic-referred sample.

Developmental coordination disorder: associated problems in attention, learning, and psychosocial adjustment.

This study investigated the problems of attention, learning and psychosocial adjustment evidenced by children with developmental coordination disorder (DCD). Forty-five children identified with DCD, 51 children identified as being suspect for DCD and 78 comparison children without motor problems on standardized tests of motor function participated in this study. Results revealed that both children with DCD and children suspect for DCD obtained significantly poorer scores on measures of attention and learning (reading, writing and spelling) than comparison children. Children with DCD and those suspect for DCD were also found to evidence a relatively high level of social problems and display a relatively high level of somatic complaints based on parent report. These findings indicate that all children with movement problems are at risk for problems in attention, learning and psychosocial adjustment. Assessment of children with movement problems, regardless of the degree or severity of these problems should examine a wide range of functions in addition to motor functioning. Such an approach, would assist in determining the types of intervention that would provide the most benefit to these children.