Research Article
Arthroplasty Utilization in the United States is Predicted by Age-Specific Population Groups
Table 4
(a) Analysis of variance table—hip arthroplasty regression. (b) Analysis of variance table—knee arthroplasty regression.
| (a) |
| | Degrees of freedom | Residual sum of squares |
| | Population total | 15 | 3,447,435,118 | | Population > 64 years | 15 | 1,591,638,084 | | Population > 84 years | 15 | 2,812,651,855 |
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|
| (b) |
| | Degrees of freedom | Residual sum of squares |
| | Population total | 15 | | | Population > 64 years | 15 | | | Population > 84 years | 15 | |
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