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EMBASE (OvidSP) (1974—)—9 August 2012
| 1 | (olympic* or paralympic*).ti,ab. | 2799 |
| 2 | (sport* adj (event* or mega-event*)).ti,ab. | 649 |
| 3 | ((international or multination* or multi-nation*) adj event*).ti,ab. and sport*.mp. | 23 |
| 4 | ((international or multination* or multi-nation*) adj games).ti,ab. | 17 |
| 5 | 1 or 2 or 3 or 4 | 3417 |
| 6 | (meta-analysis or systematic review or MEDLINE).tw. | 111218 |
| 7 | 5 and 6 | 19 |
| 8 | meta-analy*:.mp. or search*.tw. or review.pt. | 2102017 |
| 9 | 5 and 8 | 458 |
