| Total cost of treatment in dollars | sum of squares | ddl | medium square | F | P-value |
| Inter-groups | 587644929.173 | 3 | 195881643.058 | 40.852 | 0.000 |
| Intragroups | 915830311.115 | 191 | 4794923.095 | ||
| Total | 1503475240.288 | 194 |