| PCA | Principal Component Analysis |
| ADL | Activities of Daily Living |
| IADL | Instrumental Activities of Daily Living |
| PNAD | National Household Sample Survey |
| SIPD | Integrated Household Survey System |
| KMO | Kaiser-Meyer-Olkin |
| PPT | Physical Performance Score |
| TUG | Timed Up and Go |
| CIF | International Classification of Functioning, Disability and Health |
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