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Benefit-cost ratios by percentage of caries reduction and discount rate
| Discount rates | ||||
|---|---|---|---|---|
| 3 % | 5 % | 8 % | ||
| Percentage of caries reduction due to the water fluoridation program | 1 % | 8.53 | 8.03 | 7.32 |
| 15 % | 44.4 | 41.8 | 38.08 | |
| 20 % | 57.21 | 53.86 | 49.07 | |
| 25 % | 70.02 | 65.92 | 60.06 | |
| 30 % | 82.83 | 77.98 | 71.05 | |
| 35 % | 95.64 | 90.04 | 82.04 | |
| 40 % | 108.45 | 102.1 | 93.03 | |
| 50 % | 134.07 | 126.22 | 115.00 | |
