A Process Evaluation of a Multi-Component Intervention in Dutch Dietetic Treatment to Improve Portion Control...

Area of Science:

• Dietetics and Nutritional Science
• Public Health Interventions
• Obesity Management

Background:

• Portion control is crucial for weight management.
• Evidence-based interventions need integration into routine care.
• The SMARTsize intervention was developed for this purpose.

Purpose of the Study:

• To evaluate patient participation in the SMARTsize intervention.
• To assess the implementation process and patient satisfaction.
• To determine the intervention's impact on patient outcomes.

Main Methods:

• Observational study design with data collection at baseline and 3, 6, 9 months.
• Data gathered via dietitian and patient forms/questionnaires.
• Descriptive, comparison, and cluster analyses were employed.

Main Results:

• Obese, educated women of Dutch ethnicity were primary participants.
• Intervention component use ranged from 50-100% with good satisfaction (7.2-8.0).
• Significant improvements noted in self-efficacy (+0.5), portion control (+0.7), and BMI (-2.2 kg/m²).

Conclusions:

• Integrating evidence-based portion control interventions into dietetic practice is feasible.
• The SMARTsize intervention shows potential for effective weight loss.
• Patient success varied, with three distinct clusters identified.