Table 4: Descriptive Statistics of Local Anesthesia Drug Treatments Hospital Cost
| Level of Treatment | N | Hospital Cost | |
| Mean | Std Dev | ||
| S0 | 31 | $10,929.95 | $1,905.29 |
| S1 | 70 | $10.475.36 | $2,066.71 |
| S1S2 | 460 | $10,307.93 | $1.934.94 |
| S1S2S3 | 783 | $10,264.11 | $2,626.52 |
| S1S3 | 420 | $10,202.94 | $2,675.37 |
| S2S3 | 149 | $11,613.53 | $4,158.61 |
| S3 | 121 | $11.128.20 | $2,928.29 |