Appendix A.
Search strategy.
| A. PubMed | ||
| #1 | (“Prevalence” OR “Surveillance” OR “Surveys” OR “Epidemiology”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 3734 |
| #2 | (“Risk factors” OR “Determinants” OR “Predictors”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 1500 |
| #3 | (“Aging” OR “Gender”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 1708 |
| Searching date starting from 2000/01/01 to 2021/12/31All the entries were under ‘All fields’ categories | ||
| B. Google Scholar | ||
| #1 | (“Prevalence” OR “Surveillance” OR “Surveys” OR “Epidemiology”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 18,913 |
| #2 | (“Risk factors” OR “Determinants” OR “Predictors”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 16,500 |
| #3 | (“Aging” OR “Gender”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 17,103 |
| Searching date starting from 2000/01/01 to 2021/12/31 | ||
| C. ScienceDirect | ||
| #1 | (“Prevalence” OR “Surveys” OR “Epidemiology”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 4104 |
| #2 | (“Risk factors” OR “Determinants” OR “Predictors”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 4133 |
| #3 | (“Aging” OR “Gender”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 4391 |
| Searching date starting from 2000/01/01 to 2021/12/31 | ||
| D. Embase | ||
| #1 | (“Prevalence” OR “Surveillance” OR “Surveys” OR “Epidemiology”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 8713 |
| #2 | (“Risk factors” OR “Determinants” OR “Predictors”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 3616 |
| #3 | (“Aging” OR “Gender”) AND (“Multimorbidity” OR “Multi-morbidity” OR “Multimorbidities” OR “Multi-morbidities” OR “Multi morbidity” OR “Multi morbidities”) | 7138 |
| Searching date starting from 2000/01/01 to 2021/12/31 | ||