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- aggregation classification "A1".
- aggregation creator B505247.
- aggregation creator B505248.
- aggregation creator B505249.
- aggregation creator person.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2009".
- aggregation hasFormat 787214.bibtex.
- aggregation hasFormat 787214.csv.
- aggregation hasFormat 787214.dc.
- aggregation hasFormat 787214.didl.
- aggregation hasFormat 787214.doc.
- aggregation hasFormat 787214.json.
- aggregation hasFormat 787214.mets.
- aggregation hasFormat 787214.mods.
- aggregation hasFormat 787214.rdf.
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- aggregation hasFormat 787214.txt.
- aggregation hasFormat 787214.xls.
- aggregation hasFormat 787214.yaml.
- aggregation isPartOf urn:issn:0264-0414.
- aggregation language "eng".
- aggregation publisher "TAYLOR & FRANCIS LTD".
- aggregation subject "Medicine and Health Sciences".
- aggregation title "The relative age effect in a professional football club setting".
- aggregation abstract "The relative age effect is an uneven distribution of birth date favouring subjects born in the initial months of a selection year. This study compared the birth-date distributions between several subgroups of Basque football players to identify whether the relative age effect is influenced by age and/or skill level. The study comprised 13,519 players including 114 senior professionals from the Spanish league's AC Bilbao over 21 seasons; over the season 2005-2006, it comprised elite youth (n = 189) from the same club's academy; regional youth (n = 4382) U11-U14 locally federated players; school youth (n = 8834) U10-U11 locally registered school district players. Differences between the observed and expected birth-date distributions were tested based on data from the general Basque male population. Significant chi-square values were followed up by calculating odds ratios and 95% confidence intervals (CI) for the quartile and half-year distributions to examine subgroup differences in the relative age effect. Birth-date distributions of all groups of players showed a significant bias towards early birth in the selection year compared with the reference population (senior, chi(2)(3) = 24.4, P < 0.001; elite youth, chi(2)(3) = 59.1, P < 0.001; regional youth, chi(2)(3) = 41.4, P < 0.001; school youth, chi(2)(3) = 40.9, P < 0.001). Between-group comparison revealed that the relative age effect incidence progressively increased with a higher level of involvement in youth football. This bias represents a significant loss of potential youth football talent.".
- aggregation authorList BK847083.
- aggregation endPage "1158".
- aggregation issue "11".
- aggregation startPage "1153".
- aggregation volume "27".
- aggregation isDescribedBy 787214.
- aggregation similarTo 02640410903220328.
- aggregation similarTo LU-787214.