Table 1. . Study characteristics and baseline rapid number naming (King-Devick) scores.
| Study ID and reference | n | Age at Preseason baseline, years (95% CI) | K-D test preseason baseline score, seconds (95% CI) | Gender | Level of play | Sport | Ref. |
|---|---|---|---|---|---|---|---|
| 1. Galetta KM et al. (2015) | 312 | 13.3 (12.8, 13.8) | 54.2 (51.8, 56.6) | M/F | Youth/college | Hockey, lacrosse | [29] |
| 2. Galetta KM et al. (2011) | 217 | 20.3 (20.1, 20.5) | 38.5 (37.7, 39.3) | M/F | College | Football, basketball | [48] |
| 3. Marinides et al.(2014) | 220 | – | 38.7 (37.8, 39.6) | M/F | College | Football, lacrosse, soccer | [30] |
| 4. Galetta MS et al. (2013) | 69 | 24.5 (23.2, 25.8) | 42.5 (41.0, 43.9) | M | Professional | Hockey | [50] |
| 5. Munce et al. (2014) | 15 | 13.3 (12.9, 13.6) | 49.6 (45.7–53.4) | M | Youth | Football | [72] |
| 6. Leong et al. (2015) | 152 | 19.6 (19.4, 19.8) | 36.3 (35.4, 37.3) | M/F | College | Football, basketball | [53] |
| 7. Leong et al. (2014) | 34 | 25.8 (22.9, 28.6) | 41.0 (38.1, 43.9) | M/F | Amateur | Boxing | [52] |
| 8. Galetta KM et al. (2011) | 42 | 27.2 (24.2, 30.1) | 43.3 (41.3, 45.3) | M | Amateur | Boxing | [47] |
| 9. Dhawan et al. (2014) | 140 | 15.5 (15.3, 15.7) | 44.5 (43.5, 45.4) | M | Youth | Hockey | [54] |
| 10. King et al. (2015) | 68 | 24.5 (23.4 25.7) | 46.9 (44.8, 48.9) | M | Amateur | Rugby | [56] |
| 11. Duenas et al. (2014) | 12 | 16.5 (15.8, 17.2) | 43.0 (38.3, 47.6) | M | Youth | Football | [55] |
| 12. Munce et al. (2014) | 22 | 12.8 (12.5, 13.0) | 52.1 (45.3, 58.9) | M | Youth | Football | [73] |
| 13. King et al. (2015) | 19 | – | 62.0 (57.2, 66.7) | M/F | Youth | Rugby | [74] |
| 14. King et al. (2013) | 36 | 23.5 (22.1, 24.8) | 49.5 (45.8, 53.2) | M | Amateur | Rugby | [49] |
| 15. King et al. (2012) | 61 | 19.3 (18.3, 20.3) | 48.4 (46.7, 50.0) | M | Amateur | Rugby | [51] |
K-D: King-Devick; M: Male; F: Female; n: Number of athletes