Can whole-blood samples be stored over 24 hours without compromising stability of C-reactive protein, retinol, ferritin, folic acid, and fatty acids in epidemiologic research?
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Adult↗
Biomedical subjects
Marcel F van der Wal
Publications and source records attributed to Marcel F van der Wal.
There is bullying and bullying.
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Adolescent↗
Psychosocial health among young victims and offenders of direct and indirect bullying.
OBJECTIVE: To assess the association between bullying (both directly and indirectly) and indicators of psychosocial health for boys and girls separately. STUDY DESIGN: A school-based questionnaire survey of bullying, depression, suicidal ideation, and delinquent behavior. SETTING: Primary schools in Amsterdam, The Netherlands. PARTICIPANTS: A total of 4811 children aged 9 to 13. RESULTS: Depression and suicidal ideation are common outcomes of being bullied in both boys and girls. These associations are stronger for indirect than direct bullying. After correction, direct bullying had a significant effect on depression and suicidal ideation in girls, but not in boys. Boy and girl offenders of bullying far more often reported delinquent behavior. Bullying others directly is a much greater risk factor for delinquent behavior than bullying others indirectly. This was true for both boys and girls. Boy and girl offenders of bullying also more often reported depressive symptoms and suicidal ideation. However, after correction for both sexes only a significant association still existed between bullying others directly and suicidal ideation. CONCLUSIONS: The association between bullying and psychosocial health differs notably between girls and boys as well as between direct and indirect forms of bullying. Interventions to stop bullying must pay attention to these differences to enhance effectiveness.
Adolescent↗
Infant crying and abuse.
Child abuse and neglect are important causes of child morbidity and death. We assessed potentially detrimental parental actions induced by infant crying in 3259 infants aged 1-6 months, in the Netherlands. In infants aged 6 months, 5.6% (95% CI 4.2-7.0) of parents reported having smothered, slapped, or shaken their baby at least once because of its crying. The risks of detrimental actions were highest for parents from non-industrialised countries, those with either no job or a job with short working hours, and those who judged their infant's crying to be excessive. Clinicians should be aware of the risks of abuse in children known to cry a lot and should target interventions at parents to help them cope with this crying.
Child Abuse↗