Family planning field research projects: balancing internal against external validity.

Area of Science:

• Public Health
• Maternal and Child Health
• Family Planning Research

Background:

• Field projects, particularly in family planning and maternal/child health, often encounter unexpected challenges.
• Maintaining research integrity amidst real-world complexities is a persistent issue in health program evaluations.

Purpose of the Study:

• To document the experience of a two-year family planning and maternal/child health project in Nepal.
• To analyze the impact of unanticipated events on research validity and design.
• To explore the balance between internal and external validity in field research.

Main Methods:

• Qualitative review of project experiences in Nepal.
• Analysis of design modifications necessitated by unforeseen events.
• Discussion of the internal versus external validity dilemma in applied research.

Main Results:

• The project experienced multiple unanticipated events that compromised internal validity.
• Design changes were implemented to adapt to evolving field conditions.
• The study highlights the tension between rigorous experimental control and real-world applicability.

Conclusions:

• Unforeseen events are inherent in field research and necessitate adaptive strategies.
• Balancing internal validity (control) with external validity (real-world relevance) is critical for impactful health interventions.
• Flexibility in research design is essential for valid evaluations of family planning and maternal/child health programs in diverse settings.