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MEDLINE (OvidSP) (1946—in process)—9 August 2012
| 1 | (olympic* or paralympic*).ti,ab. | 2255 |
| 2 | (sport* adj (event* or mega-event*)).ti,ab. | 505 |
| 3 | ((international or multination* or multi-nation*) adj event*).ti,ab. and sport*.mp. | 15 |
| 4 | ((international or multination* or multi-nation*) adj games).ti,ab. | 10 |
| 5 | 1 or 2 or 3 or 4 | 2730 |
| 6 | (Medline or systematic review).tw. or meta-analysis.pt. | 87371 |
| 7 | 5 and 6 | 20 |
| 8 | meta-analysis.mp,pt. or review.pt. or search:.tw. | 1884987 |
| 9 | 5 and 8 | 358 |
