Table 1.
Literature search frequency results by each proxy category
| Proxy Categories | Number Retrieved | Number Meeting Inclusion Criteria |
|---|---|---|
| Education | 501 | 280 |
| Occupation | 155 | 91 |
| Leisure activities | 76 | 56 |
| Cognitive activities | 131 | 45 |
| Mood and personality | 84 | 42 |
| Intelligence quotient | 72 | 39 |
| Bilingualism | 43 | 29 |
| Physical activities | 59 | 29 |
| Socioeconomic status | 70 | 29 |
| Physical function | 42 | 24 |
| Social activities | 45 | 21 |
| Nutrition | 22 | 15 |
| Marriage status | 17 | 11 |
| Social network | 14 | 11 |
| Substances | 20 | 9 |
| Parental education | 14 | 8 |
| Social support | 13 | 6 |
| Retirement | 27 | 5 |
| Novelty | 4 | 2 |
| Adverse childhood experiences | 3 | 1 |
| Total | 1412 | 753 |