The need for quasi-experimental methodology to evaluate pricing effects

Area of Science:

• Reproductive Health
• Health Services Research
• Econometrics

Background:

• Family planning program managers often rely on pre-experimental designs for service demand analysis.
• The single-group pretest-posttest design is commonly used but can yield misleading conclusions.
• Accurate demand elasticity assessment is crucial for effective family planning program management.

Purpose of the Study:

• To evaluate the impact of study design on conclusions regarding price elasticity of demand for family planning services.
• To compare findings from a single-group pretest-posttest design with more rigorous quasi-experimental designs using real-world data.

Main Methods:

• Financial and service data from Ecuadorian family planning clinics (APROFE) were analyzed.
• Data were analyzed using both a single-group pretest-posttest design and quasi-experimental designs.
• Demand elasticity for intrauterine device (IUD) services was specifically assessed.

Main Results:

• The single-group pretest-posttest design suggested inelastic demand for IUD services.
• Quasi-experimental designs revealed considerable demand elasticity for IUD services.
• The findings highlight significant discrepancies based on the chosen research methodology.

Conclusions:

• The single-group pretest-posttest design is inadequate and impractical for pricing studies in family planning.
• Rigorous quasi-experimental designs provide more accurate insights into service demand elasticity.
• Operations research, particularly for pricing strategies, necessitates the use of robust study designs.