| Cost | RIW | ||||||
| Site | Age categories | M | SD | Minimum | Maximum | M | SD |
| 1 | 40-59 | $3843.30 | $3706.70 | $891.20 | $11585.60 | 1.03 | 0.78 |
| 60-79 | $5652.88 | $6088.21 | $313.20 | $30693.60 | 1.68 | 1.77 | |
| 80+ | $3863.78 | $3889.32 | $102.80 | $17476.00 | 1.49 | 0.72 | |
| 2 | 40-59 | $2283.70 | $557.00 | $2005.20 | $3119.20 | 0.81 | 0.26 |
| 60-79 | $5180.50 | $5272.54 | $417.60 | $22654.80 | 1.57 | 2.19 | |
| 80+ | $3546.60 | $4060.23 | $205.60 | $19223.60 | 1.41 | 0.78 | |