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The problem
Intervention: Care for child development counseling combined with nurturing care group activities
Who it was tested with: 102 high-risk newborns in China (51 intervention, 51 control).
Children or communities are compared with a group that did not receive the intervention, or followed over years. This is the design that best separates what the intervention did from everything else that changed.
"102 high-risk newborns were allocated using a quasi-random alternation method to either an intervention group (n = 51), which received both interventions, or a control group (n = 51), which received only routine follow-up care. The primary developmental outcomes were assessed using the Infant Neurological International Battery (INFANIB) and the Ages and Stages Questionnaire (ASQ) when the infants were between four and six months of age." This quasi-experimental design with allocation to distinct intervention and control groups and standardized developmental assessments provides reasonable evidence of intervention effects, though quasi-random allocation is weaker than full randomization.
Quasi-random allocation method may introduce bias; short follow-up period of four to six months limits understanding of sustained effects; no assessment of implementation fidelity or cost-effectiveness reported.
Across countries and designs
2 studies · 2 countries
