Reliability and validity of the Strengths and Difficulties Questionnaire in Greek adolescents and their parents

The Strengths and Difficulties Questionnaire (SDQ) is a brief screening measure of emotional and behavioural difficulties in children and adolescents. The aim of this study was to assess reliability and validity of the Greek version of the SDQ. A representative Greek sample of 1194 adolescents (aged 11 to 17 years) and their parents completed the SDQ along with other measures. Internal consistency reliability was determined by calculation of the Cronbach α coefficient. Varimax Orthogonal Transformation was conducted to test the factor structure of the questionnaire. Validity was further examined by investigating the correlation of the SDQ with the KIDSCREEN questionnaire and its association with demographic factors. The inter-rater agreement between parent and self-reports was analyzed with Pearson’s correlation coefficient. Intra-class correlation coefficients (ICCs) were computed to determine test-retest stability. For both parent and the self-report SDQ versions, most items loaded onto their predicted factors in consistency with the originally proposed five-factor structure. Internal consistency reliability was acceptable with a Cronbach α above 0.70 for all SDQ scales except for conduct and peer problems. Inter-rater correlations ranged from 0.33 to 0.45. Test-retest stability was good (ICCs > 0.60). Correlation coefficients between the SDQ and KIDSCREEN questionnaire were significant. Small effect sizes (d > 0.5) of the socioeconomic status were found for all of the SDQ scale mean scores. In conclusion, the SDQ was found to have satisfying psychometric properties and could be suitable for assessing emotional and behavioural problems in Greek adolescents.

Incidence and economic impact of ophthalmological occupational accidents in Greece

Scope: This article seeks to assess the eco-nomic impact of industrial accidents with ref-erence to the incidence of opthalmological in-dustrial injuries occurring in the Thriacion Plain industrial zone in Greece during the period 1991-2000. Material and Methods: Data provided by 53 industrial units have been collected and classified. During the study period, 2,011 adults and juveniles out of the 15,600 people employed in the area (a 13% aggregate) suffered opthal-mological injuries occurring at the workplace. Results: The highest percentage of injuries were due to trauma (61% of adults, 67% of juveniles), followed by chemical burns. In the majority of cases (75% of adults and 50% of juveniles) treatment was provided at the local IKA (Social Security Fund) health care unit, in the town of Elefsis. It was estimated that a total of 10,192 working days were lost, with compensation costs (benefit payments) alone amounting to approximately € 118,000.00, not allowing for in-direct employer costs such as loss of produc-tivity, substitution and replacement costs. Con-clusions: The high incidence of industrial acci-dents in combination with the high percentage of child labor in the area of Thriacion Industrial Plain were striking and contributed significantly to high- er rates of work-related injuries of ocular interest in Greece. The latter were shown to result in a sig- nificant deterioration of the employees’ health status, with the majority of the accidents being due to the lack of safety precautions at the work-place at a considerable financial burden on the social security system in direct benefit payments. The social security system needs to press for tighter work safety regulations and their proper implementation if to minimize the burden these accidents impose on its budget.