Table 4 Sample statistics from deterministic economic evaluation
Group variable | Mean | SD | SE |
|---|---|---|---|
Overall analysis | |||
 Initial survey (N = 287) | |||
  Cost | $3.72 | $8.52 | $0.50 |
  Effect | 0.70% | 8.33% | 0.49% |
  Correlation | 0.005 |  |  |
 Endline (N = 326) | |||
  Cost | $3.60 | $4.61 | $0.26 |
  Effect | 17.79% | 38.30% | 2.12% |
  Correlation | 0.029 |  |  |
 Incremental differences between phases | |||
  Cost difference | −$0.12 |  |  |
  Effect difference | 17.09% |  |  |