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Table 5 Difference in willingness-to-pay (mean and CoV) in control and treatment groups and within group effect sizes (Cohen’s d)

From: Impact of educational intervention on willingness-to-pay for health insurance: A study of informal sector workers in urban Bangladesh

Occupational group Measurement Mean Sig. of mean difference (p-value) ES (Cohen’s d) Coefficient of variation
Rickshaw-puller Control 23.0 0.067 −0.293 69.2
Treatment 27.2 45.2
Shop-keeper Control 12.5 0.000 −0.606 112.9
Treatment 20.3 57.1
Restaurant workers Control 13.1 0.001 −0.537 96.3
  Treatment 19.8 62.8
All workers Control 16.2 0.000 −0.433 92.8
  Treatment 22.3    56.1