Table 1.
Search algorithm (PubMed)
| #1 | Loneliness |
| #2 | Social isolation |
| #3 | Social exclusion |
| #4 | Social frailty |
| #5 | #1 OR #2 OR #3 OR #4 |
| #6 | Pet ownership |
| #7 | Dog |
| #8 | Cat |
| #9 | “Animal owner*” |
| #10 | #6 OR #7 OR #8 OR #9 |
| #11 | #5 AND #10 |
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